Finding the Fourth Proportional to 81,791.31, 112,868.71 and 45,980.56

Step by Step Solution

1. Step 1: Write the proportion equation
   81,791.31 : 112,868.71 = 45,980.56 : x
2. Step 2: Convert to fraction form
   81,791.31/112,868.71 = 45,980.56/x
3. Step 3: Cross multiply
   81,791.31x = 112,868.71 × 45,980.56
4. Step 4: Simplify right side
   81,791.31x = 5,189,766,492.28
5. Step 5: Solve for x
   x = 5,189,766,492.28/81,791.31
6. Step 6: Final answer
   x = 63,451.32