Finding the Fourth Proportional to 81,441.15, 112,387.69 and 45,631.86

Step by Step Solution

1. Step 1: Write the proportion equation
   81,441.15 : 112,387.69 = 45,631.86 : x
2. Step 2: Convert to fraction form
   81,441.15/112,387.69 = 45,631.86/x
3. Step 3: Cross multiply
   81,441.15x = 112,387.69 × 45,631.86
4. Step 4: Simplify right side
   81,441.15x = 5,128,458,773.86
5. Step 5: Solve for x
   x = 5,128,458,773.86/81,441.15
6. Step 6: Final answer
   x = 62,971.35