Finding the Fourth Proportional to 74,956.57, 112,451.06 and 28,209.31

Step by Step Solution

1. Step 1: Write the proportion equation
   74,956.57 : 112,451.06 = 28,209.31 : x
2. Step 2: Convert to fraction form
   74,956.57/112,451.06 = 28,209.31/x
3. Step 3: Cross multiply
   74,956.57x = 112,451.06 × 28,209.31
4. Step 4: Simplify right side
   74,956.57x = 3,172,166,670.32
5. Step 5: Solve for x
   x = 3,172,166,670.32/74,956.57
6. Step 6: Final answer
   x = 42,320.06