Finding the Fourth Proportional to 78,050.56, 107,709.78 and 42,240.83

Step by Step Solution

1. Step 1: Write the proportion equation
   78,050.56 : 107,709.78 = 42,240.83 : x
2. Step 2: Convert to fraction form
   78,050.56/107,709.78 = 42,240.83/x
3. Step 3: Cross multiply
   78,050.56x = 107,709.78 × 42,240.83
4. Step 4: Simplify right side
   78,050.56x = 4,549,750,506.32
5. Step 5: Solve for x
   x = 4,549,750,506.32/78,050.56
6. Step 6: Final answer
   x = 58,292.35