Finding the Fourth Proportional to 78,469.93, 108,290.64 and 42,662.35

Step by Step Solution

1. Step 1: Write the proportion equation
   78,469.93 : 108,290.64 = 42,662.35 : x
2. Step 2: Convert to fraction form
   78,469.93/108,290.64 = 42,662.35/x
3. Step 3: Cross multiply
   78,469.93x = 108,290.64 × 42,662.35
4. Step 4: Simplify right side
   78,469.93x = 4,619,933,185.40
5. Step 5: Solve for x
   x = 4,619,933,185.40/78,469.93
6. Step 6: Final answer
   x = 58,875.20