Finding the Fourth Proportional to 99,851.54, 137,789.93 and 54,520.76

Step by Step Solution

1. Step 1: Write the proportion equation
   99,851.54 : 137,789.93 = 54,520.76 : x
2. Step 2: Convert to fraction form
   99,851.54/137,789.93 = 54,520.76/x
3. Step 3: Cross multiply
   99,851.54x = 137,789.93 × 54,520.76
4. Step 4: Simplify right side
   99,851.54x = 7,512,412,184.72
5. Step 5: Solve for x
   x = 7,512,412,184.72/99,851.54
6. Step 6: Final answer
   x = 75,235.82