Finding the Fourth Proportional to 74,870.74, 112,322.85 and 28,124.02

Step by Step Solution

1. Step 1: Write the proportion equation
   74,870.74 : 112,322.85 = 28,124.02 : x
2. Step 2: Convert to fraction form
   74,870.74/112,322.85 = 28,124.02/x
3. Step 3: Cross multiply
   74,870.74x = 112,322.85 × 28,124.02
4. Step 4: Simplify right side
   74,870.74x = 3,158,970,079.86
5. Step 5: Solve for x
   x = 3,158,970,079.86/74,870.74
6. Step 6: Final answer
   x = 42,192.32