Finding the Fourth Proportional to 78,820.05, 118,182.42 and 31,442.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,820.05 : 118,182.42 = 31,442.34 : x
2. Step 2: Convert to fraction form
   78,820.05/118,182.42 = 31,442.34/x
3. Step 3: Cross multiply
   78,820.05x = 118,182.42 × 31,442.34
4. Step 4: Simplify right side
   78,820.05x = 3,715,931,831.66
5. Step 5: Solve for x
   x = 3,715,931,831.66/78,820.05
6. Step 6: Final answer
   x = 47,144.50