Finding the Fourth Proportional to 78,330.32, 108,097.74 and 42,520.22

Step by Step Solution

1. Step 1: Write the proportion equation
   78,330.32 : 108,097.74 = 42,520.22 : x
2. Step 2: Convert to fraction form
   78,330.32/108,097.74 = 42,520.22/x
3. Step 3: Cross multiply
   78,330.32x = 108,097.74 × 42,520.22
4. Step 4: Simplify right side
   78,330.32x = 4,596,339,686.30
5. Step 5: Solve for x
   x = 4,596,339,686.30/78,330.32
6. Step 6: Final answer
   x = 58,678.93