Finding the Fourth Proportional to 99,933.69, 137,910.30 and 54,613.59

Step by Step Solution

1. Step 1: Write the proportion equation
   99,933.69 : 137,910.30 = 54,613.59 : x
2. Step 2: Convert to fraction form
   99,933.69/137,910.30 = 54,613.59/x
3. Step 3: Cross multiply
   99,933.69x = 137,910.30 × 54,613.59
4. Step 4: Simplify right side
   99,933.69x = 7,531,776,580.98
5. Step 5: Solve for x
   x = 7,531,776,580.98/99,933.69
6. Step 6: Final answer
   x = 75,367.74