Finding the Fourth Proportional to 83,471.49, 124,936.22 and 61,279.89

Step by Step Solution

1. Step 1: Write the proportion equation
   83,471.49 : 124,936.22 = 61,279.89 : x
2. Step 2: Convert to fraction form
   83,471.49/124,936.22 = 61,279.89/x
3. Step 3: Cross multiply
   83,471.49x = 124,936.22 × 61,279.89
4. Step 4: Simplify right side
   83,471.49x = 7,656,077,512.22
5. Step 5: Solve for x
   x = 7,656,077,512.22/83,471.49
6. Step 6: Final answer
   x = 91,720.87