Finding the Fourth Proportional to 99,383.68, 137,145.52 and 54,061.72

Step by Step Solution

1. Step 1: Write the proportion equation
   99,383.68 : 137,145.52 = 54,061.72 : x
2. Step 2: Convert to fraction form
   99,383.68/137,145.52 = 54,061.72/x
3. Step 3: Cross multiply
   99,383.68x = 137,145.52 × 54,061.72
4. Step 4: Simplify right side
   99,383.68x = 7,414,322,701.49
5. Step 5: Solve for x
   x = 7,414,322,701.49/99,383.68
6. Step 6: Final answer
   x = 74,603.02