Finding the Fourth Proportional to 71,530.47, 98,697.42 and 39,692.61

Step by Step Solution

1. Step 1: Write the proportion equation
   71,530.47 : 98,697.42 = 39,692.61 : x
2. Step 2: Convert to fraction form
   71,530.47/98,697.42 = 39,692.61/x
3. Step 3: Cross multiply
   71,530.47x = 98,697.42 × 39,692.61
4. Step 4: Simplify right side
   71,530.47x = 3,917,558,200.07
5. Step 5: Solve for x
   x = 3,917,558,200.07/71,530.47
6. Step 6: Final answer
   x = 54,767.68