Finding the Fourth Proportional to 137,123.10, 205,587.45 and 52,850.70

Step by Step Solution

1. Step 1: Write the proportion equation
   137,123.10 : 205,587.45 = 52,850.70 : x
2. Step 2: Convert to fraction form
   137,123.10/205,587.45 = 52,850.70/x
3. Step 3: Cross multiply
   137,123.10x = 205,587.45 × 52,850.70
4. Step 4: Simplify right side
   137,123.10x = 10,865,440,643.72
5. Step 5: Solve for x
   x = 10,865,440,643.72/137,123.10
6. Step 6: Final answer
   x = 79,238.59