Finding the Fourth Proportional to 78,499.38, 108,282.90 and 49,381.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,499.38 : 108,282.90 = 49,381.34 : x
2. Step 2: Convert to fraction form
   78,499.38/108,282.90 = 49,381.34/x
3. Step 3: Cross multiply
   78,499.38x = 108,282.90 × 49,381.34
4. Step 4: Simplify right side
   78,499.38x = 5,347,154,159.67
5. Step 5: Solve for x
   x = 5,347,154,159.67/78,499.38
6. Step 6: Final answer
   x = 68,117.15