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Finding the Fourth Proportional to 235,458.29, 324,931.70 and 128,028.60

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Solution

The fourth proportional to 235,458.29, 324,931.70 and 128,028.60 is: 176,679.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,458.29 : 324,931.70 = 128,028.60 : x
  2. Step 2: Convert to fraction form
    235,458.29/324,931.70 = 128,028.60/x
  3. Step 3: Cross multiply
    235,458.29x = 324,931.70 × 128,028.60
  4. Step 4: Simplify right side
    235,458.29x = 41,600,550,966.69
  5. Step 5: Solve for x
    x = 41,600,550,966.69/235,458.29
  6. Step 6: Final answer
    x = 176,679.07

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