Finding the Fourth Proportional to 99,935.52, 137,906.92 and 54,615

Step by Step Solution

1. Step 1: Write the proportion equation
   99,935.52 : 137,906.92 = 54,615 : x
2. Step 2: Convert to fraction form
   99,935.52/137,906.92 = 54,615/x
3. Step 3: Cross multiply
   99,935.52x = 137,906.92 × 54,615
4. Step 4: Simplify right side
   99,935.52x = 7,531,786,435.80
5. Step 5: Solve for x
   x = 7,531,786,435.80/99,935.52
6. Step 6: Final answer
   x = 75,366.46