Finding the Fourth Proportional to 89,939.59, 124,132.88 and 53,643.37

Step by Step Solution

1. Step 1: Write the proportion equation
   89,939.59 : 124,132.88 = 53,643.37 : x
2. Step 2: Convert to fraction form
   89,939.59/124,132.88 = 53,643.37/x
3. Step 3: Cross multiply
   89,939.59x = 124,132.88 × 53,643.37
4. Step 4: Simplify right side
   89,939.59x = 6,658,906,011.01
5. Step 5: Solve for x
   x = 6,658,906,011.01/89,939.59
6. Step 6: Final answer
   x = 74,037.54