Finding the Fourth Proportional to 83,196.40, 124,872.90 and 43,781.80

Step by Step Solution

1. Step 1: Write the proportion equation
   83,196.40 : 124,872.90 = 43,781.80 : x
2. Step 2: Convert to fraction form
   83,196.40/124,872.90 = 43,781.80/x
3. Step 3: Cross multiply
   83,196.40x = 124,872.90 × 43,781.80
4. Step 4: Simplify right side
   83,196.40x = 5,467,160,333.22
5. Step 5: Solve for x
   x = 5,467,160,333.22/83,196.40
6. Step 6: Final answer
   x = 65,713.91