Finding the Fourth Proportional to 99,760.47, 137,665.15 and 54,437.32

Step by Step Solution

1. Step 1: Write the proportion equation
   99,760.47 : 137,665.15 = 54,437.32 : x
2. Step 2: Convert to fraction form
   99,760.47/137,665.15 = 54,437.32/x
3. Step 3: Cross multiply
   99,760.47x = 137,665.15 × 54,437.32
4. Step 4: Simplify right side
   99,760.47x = 7,494,121,823.40
5. Step 5: Solve for x
   x = 7,494,121,823.40/99,760.47
6. Step 6: Final answer
   x = 75,121.16