Finding the Fourth Proportional to 83,128.59, 114,712.71 and 49,140.23

Step by Step Solution

1. Step 1: Write the proportion equation
   83,128.59 : 114,712.71 = 49,140.23 : x
2. Step 2: Convert to fraction form
   83,128.59/114,712.71 = 49,140.23/x
3. Step 3: Cross multiply
   83,128.59x = 114,712.71 × 49,140.23
4. Step 4: Simplify right side
   83,128.59x = 5,637,008,379.76
5. Step 5: Solve for x
   x = 5,637,008,379.76/83,128.59
6. Step 6: Final answer
   x = 67,810.71