Finding the Fourth Proportional to 282,100.31, 423,150.92 and 99,866.71

Step by Step Solution

1. Step 1: Write the proportion equation
   282,100.31 : 423,150.92 = 99,866.71 : x
2. Step 2: Convert to fraction form
   282,100.31/423,150.92 = 99,866.71/x
3. Step 3: Cross multiply
   282,100.31x = 423,150.92 × 99,866.71
4. Step 4: Simplify right side
   282,100.31x = 42,258,690,213.87
5. Step 5: Solve for x
   x = 42,258,690,213.87/282,100.31
6. Step 6: Final answer
   x = 149,800.23