Finding the Fourth Proportional to 71,145.31, 98,196.90 and 40,948.07

Step by Step Solution

1. Step 1: Write the proportion equation
   71,145.31 : 98,196.90 = 40,948.07 : x
2. Step 2: Convert to fraction form
   71,145.31/98,196.90 = 40,948.07/x
3. Step 3: Cross multiply
   71,145.31x = 98,196.90 × 40,948.07
4. Step 4: Simplify right side
   71,145.31x = 4,020,973,534.98
5. Step 5: Solve for x
   x = 4,020,973,534.98/71,145.31
6. Step 6: Final answer
   x = 56,517.76