Finding the Fourth Proportional to 91,487.58, 137,313.37 and 76,587.96

Step by Step Solution

1. Step 1: Write the proportion equation
   91,487.58 : 137,313.37 = 76,587.96 : x
2. Step 2: Convert to fraction form
   91,487.58/137,313.37 = 76,587.96/x
3. Step 3: Cross multiply
   91,487.58x = 137,313.37 × 76,587.96
4. Step 4: Simplify right side
   91,487.58x = 10,516,550,202.46
5. Step 5: Solve for x
   x = 10,516,550,202.46/91,487.58
6. Step 6: Final answer
   x = 114,950.58