Finding the Fourth Proportional to 83,490.42, 115,221.48 and 49,519.02

Step by Step Solution

1. Step 1: Write the proportion equation
   83,490.42 : 115,221.48 = 49,519.02 : x
2. Step 2: Convert to fraction form
   83,490.42/115,221.48 = 49,519.02/x
3. Step 3: Cross multiply
   83,490.42x = 115,221.48 × 49,519.02
4. Step 4: Simplify right side
   83,490.42x = 5,705,654,772.55
5. Step 5: Solve for x
   x = 5,705,654,772.55/83,490.42
6. Step 6: Final answer
   x = 68,339.04