Finding the Fourth Proportional to 74,789.24, 112,150.98 and 28,009.31

Step by Step Solution

1. Step 1: Write the proportion equation
   74,789.24 : 112,150.98 = 28,009.31 : x
2. Step 2: Convert to fraction form
   74,789.24/112,150.98 = 28,009.31/x
3. Step 3: Cross multiply
   74,789.24x = 112,150.98 × 28,009.31
4. Step 4: Simplify right side
   74,789.24x = 3,141,271,004.87
5. Step 5: Solve for x
   x = 3,141,271,004.87/74,789.24
6. Step 6: Final answer
   x = 42,001.65