Finding the Fourth Proportional to 78,709.51, 108,621.43 and 42,901.84

Step by Step Solution

1. Step 1: Write the proportion equation
   78,709.51 : 108,621.43 = 42,901.84 : x
2. Step 2: Convert to fraction form
   78,709.51/108,621.43 = 42,901.84/x
3. Step 3: Cross multiply
   78,709.51x = 108,621.43 × 42,901.84
4. Step 4: Simplify right side
   78,709.51x = 4,660,058,831.62
5. Step 5: Solve for x
   x = 4,660,058,831.62/78,709.51
6. Step 6: Final answer
   x = 59,205.79