Finding the Fourth Proportional to 83,105.84, 124,718.52 and 56,385.32

Step by Step Solution

1. Step 1: Write the proportion equation
   83,105.84 : 124,718.52 = 56,385.32 : x
2. Step 2: Convert to fraction form
   83,105.84/124,718.52 = 56,385.32/x
3. Step 3: Cross multiply
   83,105.84x = 124,718.52 × 56,385.32
4. Step 4: Simplify right side
   83,105.84x = 7,032,293,660.13
5. Step 5: Solve for x
   x = 7,032,293,660.13/83,105.84
6. Step 6: Final answer
   x = 84,618.53