Finding the Fourth Proportional to 99,969.32, 137,868.30 and 82,946.61

Step by Step Solution

1. Step 1: Write the proportion equation
   99,969.32 : 137,868.30 = 82,946.61 : x
2. Step 2: Convert to fraction form
   99,969.32/137,868.30 = 82,946.61/x
3. Step 3: Cross multiply
   99,969.32x = 137,868.30 × 82,946.61
4. Step 4: Simplify right side
   99,969.32x = 11,435,708,111.46
5. Step 5: Solve for x
   x = 11,435,708,111.46/99,969.32
6. Step 6: Final answer
   x = 114,392.17