Finding the Fourth Proportional to 99,398.62, 137,170.42 and 54,076.59

Step by Step Solution

1. Step 1: Write the proportion equation
   99,398.62 : 137,170.42 = 54,076.59 : x
2. Step 2: Convert to fraction form
   99,398.62/137,170.42 = 54,076.59/x
3. Step 3: Cross multiply
   99,398.62x = 137,170.42 × 54,076.59
4. Step 4: Simplify right side
   99,398.62x = 7,417,709,040.59
5. Step 5: Solve for x
   x = 7,417,709,040.59/99,398.62
6. Step 6: Final answer
   x = 74,625.88