Finding the Fourth Proportional to 81,194.72, 112,061.40 and 49,373.60

Step by Step Solution

1. Step 1: Write the proportion equation
   81,194.72 : 112,061.40 = 49,373.60 : x
2. Step 2: Convert to fraction form
   81,194.72/112,061.40 = 49,373.60/x
3. Step 3: Cross multiply
   81,194.72x = 112,061.40 × 49,373.60
4. Step 4: Simplify right side
   81,194.72x = 5,532,874,739.04
5. Step 5: Solve for x
   x = 5,532,874,739.04/81,194.72
6. Step 6: Final answer
   x = 68,143.28