Finding the Fourth Proportional to 124,784.38, 187,264.05 and 72,121.42

Step by Step Solution

1. Step 1: Write the proportion equation
   124,784.38 : 187,264.05 = 72,121.42 : x
2. Step 2: Convert to fraction form
   124,784.38/187,264.05 = 72,121.42/x
3. Step 3: Cross multiply
   124,784.38x = 187,264.05 × 72,121.42
4. Step 4: Simplify right side
   124,784.38x = 13,505,749,200.95
5. Step 5: Solve for x
   x = 13,505,749,200.95/124,784.38
6. Step 6: Final answer
   x = 108,232.69