Finding the Fourth Proportional to 78,699.33, 108,605.22 and 42,889.33

Step by Step Solution

1. Step 1: Write the proportion equation
   78,699.33 : 108,605.22 = 42,889.33 : x
2. Step 2: Convert to fraction form
   78,699.33/108,605.22 = 42,889.33/x
3. Step 3: Cross multiply
   78,699.33x = 108,605.22 × 42,889.33
4. Step 4: Simplify right side
   78,699.33x = 4,658,004,848.79
5. Step 5: Solve for x
   x = 4,658,004,848.79/78,699.33
6. Step 6: Final answer
   x = 59,187.35