Finding the Fourth Proportional to 78,009.89, 107,653.33 and 42,199.82

Step by Step Solution

1. Step 1: Write the proportion equation
   78,009.89 : 107,653.33 = 42,199.82 : x
2. Step 2: Convert to fraction form
   78,009.89/107,653.33 = 42,199.82/x
3. Step 3: Cross multiply
   78,009.89x = 107,653.33 × 42,199.82
4. Step 4: Simplify right side
   78,009.89x = 4,542,950,504.63
5. Step 5: Solve for x
   x = 4,542,950,504.63/78,009.89
6. Step 6: Final answer
   x = 58,235.57