Finding the Fourth Proportional to 78,031.44, 107,684.24 and 42,222.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,031.44 : 107,684.24 = 42,222.15 : x
2. Step 2: Convert to fraction form
   78,031.44/107,684.24 = 42,222.15/x
3. Step 3: Cross multiply
   78,031.44x = 107,684.24 × 42,222.15
4. Step 4: Simplify right side
   78,031.44x = 4,546,659,922.81
5. Step 5: Solve for x
   x = 4,546,659,922.81/78,031.44
6. Step 6: Final answer
   x = 58,267.03