Finding the Fourth Proportional to 71,613.31, 98,823.01 and 39,784.15

Step by Step Solution

1. Step 1: Write the proportion equation
   71,613.31 : 98,823.01 = 39,784.15 : x
2. Step 2: Convert to fraction form
   71,613.31/98,823.01 = 39,784.15/x
3. Step 3: Cross multiply
   71,613.31x = 98,823.01 × 39,784.15
4. Step 4: Simplify right side
   71,613.31x = 3,931,589,453.29
5. Step 5: Solve for x
   x = 3,931,589,453.29/71,613.31
6. Step 6: Final answer
   x = 54,900.26