Finding the Fourth Proportional to 123,737.59, 170,669.65 and 113,561.42

Step by Step Solution

1. Step 1: Write the proportion equation
   123,737.59 : 170,669.65 = 113,561.42 : x
2. Step 2: Convert to fraction form
   123,737.59/170,669.65 = 113,561.42/x
3. Step 3: Cross multiply
   123,737.59x = 170,669.65 × 113,561.42
4. Step 4: Simplify right side
   123,737.59x = 19,381,487,804.90
5. Step 5: Solve for x
   x = 19,381,487,804.90/123,737.59
6. Step 6: Final answer
   x = 156,633.79