Finding the Fourth Proportional to 91,488.07, 137,314.12 and 76,588.45

Step by Step Solution

1. Step 1: Write the proportion equation
   91,488.07 : 137,314.12 = 76,588.45 : x
2. Step 2: Convert to fraction form
   91,488.07/137,314.12 = 76,588.45/x
3. Step 3: Cross multiply
   91,488.07x = 137,314.12 × 76,588.45
4. Step 4: Simplify right side
   91,488.07x = 10,516,675,613.91
5. Step 5: Solve for x
   x = 10,516,675,613.91/91,488.07
6. Step 6: Final answer
   x = 114,951.33