Finding the Fourth Proportional to 78,405.87, 108,200.19 and 42,595.91

Step by Step Solution

1. Step 1: Write the proportion equation
   78,405.87 : 108,200.19 = 42,595.91 : x
2. Step 2: Convert to fraction form
   78,405.87/108,200.19 = 42,595.91/x
3. Step 3: Cross multiply
   78,405.87x = 108,200.19 × 42,595.91
4. Step 4: Simplify right side
   78,405.87x = 4,608,885,014.22
5. Step 5: Solve for x
   x = 4,608,885,014.22/78,405.87
6. Step 6: Final answer
   x = 58,782.40