Finding the Fourth Proportional to 115,070.76, 158,715.82 and 76,811

Step by Step Solution

1. Step 1: Write the proportion equation
   115,070.76 : 158,715.82 = 76,811 : x
2. Step 2: Convert to fraction form
   115,070.76/158,715.82 = 76,811/x
3. Step 3: Cross multiply
   115,070.76x = 158,715.82 × 76,811
4. Step 4: Simplify right side
   115,070.76x = 12,191,120,850.02
5. Step 5: Solve for x
   x = 12,191,120,850.02/115,070.76
6. Step 6: Final answer
   x = 105,944.56