Finding the Fourth Proportional to 78,516.83, 108,307.05 and 49,398.89

Step by Step Solution

1. Step 1: Write the proportion equation
   78,516.83 : 108,307.05 = 49,398.89 : x
2. Step 2: Convert to fraction form
   78,516.83/108,307.05 = 49,398.89/x
3. Step 3: Cross multiply
   78,516.83x = 108,307.05 × 49,398.89
4. Step 4: Simplify right side
   78,516.83x = 5,350,247,507.64
5. Step 5: Solve for x
   x = 5,350,247,507.64/78,516.83
6. Step 6: Final answer
   x = 68,141.41