Finding the Fourth Proportional to 74,925.57, 112,395.89 and 21,618.87

Step by Step Solution

1. Step 1: Write the proportion equation
   74,925.57 : 112,395.89 = 21,618.87 : x
2. Step 2: Convert to fraction form
   74,925.57/112,395.89 = 21,618.87/x
3. Step 3: Cross multiply
   74,925.57x = 112,395.89 × 21,618.87
4. Step 4: Simplify right side
   74,925.57x = 2,429,872,026.35
5. Step 5: Solve for x
   x = 2,429,872,026.35/74,925.57
6. Step 6: Final answer
   x = 32,430.48