Finding the Fourth Proportional to 99,733.58, 137,632.47 and 54,411.42

Step by Step Solution

1. Step 1: Write the proportion equation
   99,733.58 : 137,632.47 = 54,411.42 : x
2. Step 2: Convert to fraction form
   99,733.58/137,632.47 = 54,411.42/x
3. Step 3: Cross multiply
   99,733.58x = 137,632.47 × 54,411.42
4. Step 4: Simplify right side
   99,733.58x = 7,488,778,130.81
5. Step 5: Solve for x
   x = 7,488,778,130.81/99,733.58
6. Step 6: Final answer
   x = 75,087.83