Finding the Fourth Proportional to 109,870.10, 164,805.15 and 83,626.10

Step by Step Solution

1. Step 1: Write the proportion equation
   109,870.10 : 164,805.15 = 83,626.10 : x
2. Step 2: Convert to fraction form
   109,870.10/164,805.15 = 83,626.10/x
3. Step 3: Cross multiply
   109,870.10x = 164,805.15 × 83,626.10
4. Step 4: Simplify right side
   109,870.10x = 13,782,011,954.42
5. Step 5: Solve for x
   x = 13,782,011,954.42/109,870.10
6. Step 6: Final answer
   x = 125,439.15