Finding the Fourth Proportional to 48,365.31, 72,155.22 and 45,749.55

Step by Step Solution

1. Step 1: Write the proportion equation
   48,365.31 : 72,155.22 = 45,749.55 : x
2. Step 2: Convert to fraction form
   48,365.31/72,155.22 = 45,749.55/x
3. Step 3: Cross multiply
   48,365.31x = 72,155.22 × 45,749.55
4. Step 4: Simplify right side
   48,365.31x = 3,301,068,845.15
5. Step 5: Solve for x
   x = 3,301,068,845.15/48,365.31
6. Step 6: Final answer
   x = 68,252.82