Finding the Fourth Proportional to 99,981.30, 137,977.86 and 54,662.34

Step by Step Solution

1. Step 1: Write the proportion equation
   99,981.30 : 137,977.86 = 54,662.34 : x
2. Step 2: Convert to fraction form
   99,981.30/137,977.86 = 54,662.34/x
3. Step 3: Cross multiply
   99,981.30x = 137,977.86 × 54,662.34
4. Step 4: Simplify right side
   99,981.30x = 7,542,192,695.79
5. Step 5: Solve for x
   x = 7,542,192,695.79/99,981.30
6. Step 6: Final answer
   x = 75,436.03