Finding the Fourth Proportional to 81,100.29, 111,918.66 and 45,291.63

Step by Step Solution

1. Step 1: Write the proportion equation
   81,100.29 : 111,918.66 = 45,291.63 : x
2. Step 2: Convert to fraction form
   81,100.29/111,918.66 = 45,291.63/x
3. Step 3: Cross multiply
   81,100.29x = 111,918.66 × 45,291.63
4. Step 4: Simplify right side
   81,100.29x = 5,068,978,538.82
5. Step 5: Solve for x
   x = 5,068,978,538.82/81,100.29
6. Step 6: Final answer
   x = 62,502.59