Finding the Fourth Proportional to 48,327.72, 72,498.18 and 45,411.72

Step by Step Solution

1. Step 1: Write the proportion equation
   48,327.72 : 72,498.18 = 45,411.72 : x
2. Step 2: Convert to fraction form
   48,327.72/72,498.18 = 45,411.72/x
3. Step 3: Cross multiply
   48,327.72x = 72,498.18 × 45,411.72
4. Step 4: Simplify right side
   48,327.72x = 3,292,267,050.67
5. Step 5: Solve for x
   x = 3,292,267,050.67/48,327.72
6. Step 6: Final answer
   x = 68,123.78