Finding the Fourth Proportional to 83,943.72, 115,838.91 and 48,108.78

Step by Step Solution

1. Step 1: Write the proportion equation
   83,943.72 : 115,838.91 = 48,108.78 : x
2. Step 2: Convert to fraction form
   83,943.72/115,838.91 = 48,108.78/x
3. Step 3: Cross multiply
   83,943.72x = 115,838.91 × 48,108.78
4. Step 4: Simplify right side
   83,943.72x = 5,572,868,636.63
5. Step 5: Solve for x
   x = 5,572,868,636.63/83,943.72
6. Step 6: Final answer
   x = 66,388.15