Finding the Fourth Proportional to 109,870.92, 164,805.15 and 83,379.66

Step by Step Solution

1. Step 1: Write the proportion equation
   109,870.92 : 164,805.15 = 83,379.66 : x
2. Step 2: Convert to fraction form
   109,870.92/164,805.15 = 83,379.66/x
3. Step 3: Cross multiply
   109,870.92x = 164,805.15 × 83,379.66
4. Step 4: Simplify right side
   109,870.92x = 13,741,397,373.25
5. Step 5: Solve for x
   x = 13,741,397,373.25/109,870.92
6. Step 6: Final answer
   x = 125,068.56