Finding the Fourth Proportional to 115,061.36, 172,611.72 and 52,737.20

Step by Step Solution

1. Step 1: Write the proportion equation
   115,061.36 : 172,611.72 = 52,737.20 : x
2. Step 2: Convert to fraction form
   115,061.36/172,611.72 = 52,737.20/x
3. Step 3: Cross multiply
   115,061.36x = 172,611.72 × 52,737.20
4. Step 4: Simplify right side
   115,061.36x = 9,103,058,799.98
5. Step 5: Solve for x
   x = 9,103,058,799.98/115,061.36
6. Step 6: Final answer
   x = 79,114.82