Finding the Fourth Proportional to 81,519.48, 112,501.50 and 45,707.76

Step by Step Solution

1. Step 1: Write the proportion equation
   81,519.48 : 112,501.50 = 45,707.76 : x
2. Step 2: Convert to fraction form
   81,519.48/112,501.50 = 45,707.76/x
3. Step 3: Cross multiply
   81,519.48x = 112,501.50 × 45,707.76
4. Step 4: Simplify right side
   81,519.48x = 5,142,191,561.64
5. Step 5: Solve for x
   x = 5,142,191,561.64/81,519.48
6. Step 6: Final answer
   x = 63,079.30