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Finding the Fourth Proportional to 57,109.92, 78,836.40 and 42,966.24

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Solution

The fourth proportional to 57,109.92, 78,836.40 and 42,966.24 is: 59,312.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,109.92 : 78,836.40 = 42,966.24 : x
  2. Step 2: Convert to fraction form
    57,109.92/78,836.40 = 42,966.24/x
  3. Step 3: Cross multiply
    57,109.92x = 78,836.40 × 42,966.24
  4. Step 4: Simplify right side
    57,109.92x = 3,387,303,683.14
  5. Step 5: Solve for x
    x = 3,387,303,683.14/57,109.92
  6. Step 6: Final answer
    x = 59,312.00

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