Finding the Fourth Proportional to 83,106.72, 124,770.78 and 70,706.43

Step by Step Solution

1. Step 1: Write the proportion equation
   83,106.72 : 124,770.78 = 70,706.43 : x
2. Step 2: Convert to fraction form
   83,106.72/124,770.78 = 70,706.43/x
3. Step 3: Cross multiply
   83,106.72x = 124,770.78 × 70,706.43
4. Step 4: Simplify right side
   83,106.72x = 8,822,096,422.12
5. Step 5: Solve for x
   x = 8,822,096,422.12/83,106.72
6. Step 6: Final answer
   x = 106,153.83