Finding the Fourth Proportional to 78,559.26, 108,410.86 and 42,748.65

Step by Step Solution

1. Step 1: Write the proportion equation
   78,559.26 : 108,410.86 = 42,748.65 : x
2. Step 2: Convert to fraction form
   78,559.26/108,410.86 = 42,748.65/x
3. Step 3: Cross multiply
   78,559.26x = 108,410.86 × 42,748.65
4. Step 4: Simplify right side
   78,559.26x = 4,634,417,910.34
5. Step 5: Solve for x
   x = 4,634,417,910.34/78,559.26
6. Step 6: Final answer
   x = 58,992.64