Finding the Fourth Proportional to 83,653.64, 124,878.72 and 71,678.46

Step by Step Solution

1. Step 1: Write the proportion equation
   83,653.64 : 124,878.72 = 71,678.46 : x
2. Step 2: Convert to fraction form
   83,653.64/124,878.72 = 71,678.46/x
3. Step 3: Cross multiply
   83,653.64x = 124,878.72 × 71,678.46
4. Step 4: Simplify right side
   83,653.64x = 8,951,114,336.37
5. Step 5: Solve for x
   x = 8,951,114,336.37/83,653.64
6. Step 6: Final answer
   x = 107,002.10