Finding the Fourth Proportional to 78,123.33, 107,810.15 and 42,313.33

Step by Step Solution

1. Step 1: Write the proportion equation
   78,123.33 : 107,810.15 = 42,313.33 : x
2. Step 2: Convert to fraction form
   78,123.33/107,810.15 = 42,313.33/x
3. Step 3: Cross multiply
   78,123.33x = 107,810.15 × 42,313.33
4. Step 4: Simplify right side
   78,123.33x = 4,561,806,454.30
5. Step 5: Solve for x
   x = 4,561,806,454.30/78,123.33
6. Step 6: Final answer
   x = 58,392.37