Finding the Fourth Proportional to 99,694.35, 137,577.78 and 54,371.52

Step by Step Solution

1. Step 1: Write the proportion equation
   99,694.35 : 137,577.78 = 54,371.52 : x
2. Step 2: Convert to fraction form
   99,694.35/137,577.78 = 54,371.52/x
3. Step 3: Cross multiply
   99,694.35x = 137,577.78 × 54,371.52
4. Step 4: Simplify right side
   99,694.35x = 7,480,313,016.83
5. Step 5: Solve for x
   x = 7,480,313,016.83/99,694.35
6. Step 6: Final answer
   x = 75,032.47