Finding the Fourth Proportional to 71,381.30, 106,969.55 and 52,514.10

Step by Step Solution

1. Step 1: Write the proportion equation
   71,381.30 : 106,969.55 = 52,514.10 : x
2. Step 2: Convert to fraction form
   71,381.30/106,969.55 = 52,514.10/x
3. Step 3: Cross multiply
   71,381.30x = 106,969.55 × 52,514.10
4. Step 4: Simplify right side
   71,381.30x = 5,617,409,645.66
5. Step 5: Solve for x
   x = 5,617,409,645.66/71,381.30
6. Step 6: Final answer
   x = 78,695.82