Finding the Fourth Proportional to 102,592.71, 153,937.80 and 71,051.31

Step by Step Solution

1. Step 1: Write the proportion equation
   102,592.71 : 153,937.80 = 71,051.31 : x
2. Step 2: Convert to fraction form
   102,592.71/153,937.80 = 71,051.31/x
3. Step 3: Cross multiply
   102,592.71x = 153,937.80 × 71,051.31
4. Step 4: Simplify right side
   102,592.71x = 10,937,482,348.52
5. Step 5: Solve for x
   x = 10,937,482,348.52/102,592.71
6. Step 6: Final answer
   x = 106,610.72