Finding the Fourth Proportional to 78,089.08, 107,763.18 and 42,279.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,089.08 : 107,763.18 = 42,279.48 : x
2. Step 2: Convert to fraction form
   78,089.08/107,763.18 = 42,279.48/x
3. Step 3: Cross multiply
   78,089.08x = 107,763.18 × 42,279.48
4. Step 4: Simplify right side
   78,089.08x = 4,556,171,213.55
5. Step 5: Solve for x
   x = 4,556,171,213.55/78,089.08
6. Step 6: Final answer
   x = 58,345.82