Finding the Fourth Proportional to 112,796.30, 155,648.52 and 65,040.42

Step by Step Solution

1. Step 1: Write the proportion equation
   112,796.30 : 155,648.52 = 65,040.42 : x
2. Step 2: Convert to fraction form
   112,796.30/155,648.52 = 65,040.42/x
3. Step 3: Cross multiply
   112,796.30x = 155,648.52 × 65,040.42
4. Step 4: Simplify right side
   112,796.30x = 10,123,445,113.18
5. Step 5: Solve for x
   x = 10,123,445,113.18/112,796.30
6. Step 6: Final answer
   x = 89,749.80