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Finding the Fourth Proportional to 235,985.18, 325,655.78 and 128,556.50

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Solution

The fourth proportional to 235,985.18, 325,655.78 and 128,556.50 is: 177,405.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,985.18 : 325,655.78 = 128,556.50 : x
  2. Step 2: Convert to fraction form
    235,985.18/325,655.78 = 128,556.50/x
  3. Step 3: Cross multiply
    235,985.18x = 325,655.78 × 128,556.50
  4. Step 4: Simplify right side
    235,985.18x = 41,865,167,281.57
  5. Step 5: Solve for x
    x = 41,865,167,281.57/235,985.18
  6. Step 6: Final answer
    x = 177,405.92

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