Finding the Fourth Proportional to 78,797.34, 108,741.69 and 42,987.65

Step by Step Solution

1. Step 1: Write the proportion equation
   78,797.34 : 108,741.69 = 42,987.65 : x
2. Step 2: Convert to fraction form
   78,797.34/108,741.69 = 42,987.65/x
3. Step 3: Cross multiply
   78,797.34x = 108,741.69 × 42,987.65
4. Step 4: Simplify right side
   78,797.34x = 4,674,549,166.42
5. Step 5: Solve for x
   x = 4,674,549,166.42/78,797.34
6. Step 6: Final answer
   x = 59,323.69