Finding the Fourth Proportional to 71,788.03, 99,068.42 and 39,526.40

Step by Step Solution

1. Step 1: Write the proportion equation
   71,788.03 : 99,068.42 = 39,526.40 : x
2. Step 2: Convert to fraction form
   71,788.03/99,068.42 = 39,526.40/x
3. Step 3: Cross multiply
   71,788.03x = 99,068.42 × 39,526.40
4. Step 4: Simplify right side
   71,788.03x = 3,915,817,996.29
5. Step 5: Solve for x
   x = 3,915,817,996.29/71,788.03
6. Step 6: Final answer
   x = 54,546.95