Finding the Fourth Proportional to 89,423.31, 123,407.20 and 49,138.52

Step by Step Solution

1. Step 1: Write the proportion equation
   89,423.31 : 123,407.20 = 49,138.52 : x
2. Step 2: Convert to fraction form
   89,423.31/123,407.20 = 49,138.52/x
3. Step 3: Cross multiply
   89,423.31x = 123,407.20 × 49,138.52
4. Step 4: Simplify right side
   89,423.31x = 6,064,047,165.34
5. Step 5: Solve for x
   x = 6,064,047,165.34/89,423.31
6. Step 6: Final answer
   x = 67,812.82