Finding the Fourth Proportional to 71,407.29, 106,472.52 and 69,445.53

Step by Step Solution

1. Step 1: Write the proportion equation
   71,407.29 : 106,472.52 = 69,445.53 : x
2. Step 2: Convert to fraction form
   71,407.29/106,472.52 = 69,445.53/x
3. Step 3: Cross multiply
   71,407.29x = 106,472.52 × 69,445.53
4. Step 4: Simplify right side
   71,407.29x = 7,394,039,875.86
5. Step 5: Solve for x
   x = 7,394,039,875.86/71,407.29
6. Step 6: Final answer
   x = 103,547.42