Finding the Fourth Proportional to 78,050.30, 107,709.37 and 42,240.29

Step by Step Solution

1. Step 1: Write the proportion equation
   78,050.30 : 107,709.37 = 42,240.29 : x
2. Step 2: Convert to fraction form
   78,050.30/107,709.37 = 42,240.29/x
3. Step 3: Cross multiply
   78,050.30x = 107,709.37 × 42,240.29
4. Step 4: Simplify right side
   78,050.30x = 4,549,674,380.37
5. Step 5: Solve for x
   x = 4,549,674,380.37/78,050.30
6. Step 6: Final answer
   x = 58,291.57