Finding the Fourth Proportional to 99,817.72, 137,746.24 and 54,493.96

Step by Step Solution

1. Step 1: Write the proportion equation
   99,817.72 : 137,746.24 = 54,493.96 : x
2. Step 2: Convert to fraction form
   99,817.72/137,746.24 = 54,493.96/x
3. Step 3: Cross multiply
   99,817.72x = 137,746.24 × 54,493.96
4. Step 4: Simplify right side
   99,817.72x = 7,506,338,092.71
5. Step 5: Solve for x
   x = 7,506,338,092.71/99,817.72
6. Step 6: Final answer
   x = 75,200.46