Finding the Fourth Proportional to 81,475.61, 112,439.61 and 45,665.37

Step by Step Solution

1. Step 1: Write the proportion equation
   81,475.61 : 112,439.61 = 45,665.37 : x
2. Step 2: Convert to fraction form
   81,475.61/112,439.61 = 45,665.37/x
3. Step 3: Cross multiply
   81,475.61x = 112,439.61 × 45,665.37
4. Step 4: Simplify right side
   81,475.61x = 5,134,596,393.31
5. Step 5: Solve for x
   x = 5,134,596,393.31/81,475.61
6. Step 6: Final answer
   x = 63,020.05