Finding the Fourth Proportional to 99,016.32, 136,695.60 and 76,471.98

Step by Step Solution

1. Step 1: Write the proportion equation
   99,016.32 : 136,695.60 = 76,471.98 : x
2. Step 2: Convert to fraction form
   99,016.32/136,695.60 = 76,471.98/x
3. Step 3: Cross multiply
   99,016.32x = 136,695.60 × 76,471.98
4. Step 4: Simplify right side
   99,016.32x = 10,453,383,189.29
5. Step 5: Solve for x
   x = 10,453,383,189.29/99,016.32
6. Step 6: Final answer
   x = 105,572.33