Finding the Fourth Proportional to 99,293.76, 137,025.38 and 54,581.76

Step by Step Solution

1. Step 1: Write the proportion equation
   99,293.76 : 137,025.38 = 54,581.76 : x
2. Step 2: Convert to fraction form
   99,293.76/137,025.38 = 54,581.76/x
3. Step 3: Cross multiply
   99,293.76x = 137,025.38 × 54,581.76
4. Step 4: Simplify right side
   99,293.76x = 7,479,086,405.07
5. Step 5: Solve for x
   x = 7,479,086,405.07/99,293.76
6. Step 6: Final answer
   x = 75,322.82