Finding the Fourth Proportional to 78,393.24, 118,112.82 and 70,905.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,393.24 : 118,112.82 = 70,905.42 : x
2. Step 2: Convert to fraction form
   78,393.24/118,112.82 = 70,905.42/x
3. Step 3: Cross multiply
   78,393.24x = 118,112.82 × 70,905.42
4. Step 4: Simplify right side
   78,393.24x = 8,374,839,109.48
5. Step 5: Solve for x
   x = 8,374,839,109.48/78,393.24
6. Step 6: Final answer
   x = 106,831.14