Finding the Fourth Proportional to 99,404.39, 137,176.55 and 54,081.34

Step by Step Solution

1. Step 1: Write the proportion equation
   99,404.39 : 137,176.55 = 54,081.34 : x
2. Step 2: Convert to fraction form
   99,404.39/137,176.55 = 54,081.34/x
3. Step 3: Cross multiply
   99,404.39x = 137,176.55 × 54,081.34
4. Step 4: Simplify right side
   99,404.39x = 7,418,691,640.58
5. Step 5: Solve for x
   x = 7,418,691,640.58/99,404.39
6. Step 6: Final answer
   x = 74,631.43