Finding the Fourth Proportional to 81,462.06, 112,420.17 and 45,643.86

Step by Step Solution

1. Step 1: Write the proportion equation
   81,462.06 : 112,420.17 = 45,643.86 : x
2. Step 2: Convert to fraction form
   81,462.06/112,420.17 = 45,643.86/x
3. Step 3: Cross multiply
   81,462.06x = 112,420.17 × 45,643.86
4. Step 4: Simplify right side
   81,462.06x = 5,131,290,500.66
5. Step 5: Solve for x
   x = 5,131,290,500.66/81,462.06
6. Step 6: Final answer
   x = 62,989.94