Finding the Fourth Proportional to 78,523.90, 108,364.42 and 42,714.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,523.90 : 108,364.42 = 42,714.20 : x
2. Step 2: Convert to fraction form
   78,523.90/108,364.42 = 42,714.20/x
3. Step 3: Cross multiply
   78,523.90x = 108,364.42 × 42,714.20
4. Step 4: Simplify right side
   78,523.90x = 4,628,699,508.76
5. Step 5: Solve for x
   x = 4,628,699,508.76/78,523.90
6. Step 6: Final answer
   x = 58,946.38