Finding the Fourth Proportional to 81,507.74, 112,500.69 and 49,694.18

Step by Step Solution

1. Step 1: Write the proportion equation
   81,507.74 : 112,500.69 = 49,694.18 : x
2. Step 2: Convert to fraction form
   81,507.74/112,500.69 = 49,694.18/x
3. Step 3: Cross multiply
   81,507.74x = 112,500.69 × 49,694.18
4. Step 4: Simplify right side
   81,507.74x = 5,590,629,538.98
5. Step 5: Solve for x
   x = 5,590,629,538.98/81,507.74
6. Step 6: Final answer
   x = 68,590.17