Finding the Fourth Proportional to 42,065.52, 63,084.63 and 13,978.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,065.52 : 63,084.63 = 13,978.04 : x
2. Step 2: Convert to fraction form
   42,065.52/63,084.63 = 13,978.04/x
3. Step 3: Cross multiply
   42,065.52x = 63,084.63 × 13,978.04
4. Step 4: Simplify right side
   42,065.52x = 881,799,166.10
5. Step 5: Solve for x
   x = 881,799,166.10/42,065.52
6. Step 6: Final answer
   x = 20,962.52