Finding the Fourth Proportional to 78,499.02, 108,365.85 and 50,221.11

Step by Step Solution

1. Step 1: Write the proportion equation
   78,499.02 : 108,365.85 = 50,221.11 : x
2. Step 2: Convert to fraction form
   78,499.02/108,365.85 = 50,221.11/x
3. Step 3: Cross multiply
   78,499.02x = 108,365.85 × 50,221.11
4. Step 4: Simplify right side
   78,499.02x = 5,442,253,679.47
5. Step 5: Solve for x
   x = 5,442,253,679.47/78,499.02
6. Step 6: Final answer
   x = 69,328.93