Finding the Fourth Proportional to 78,580.88, 108,440.10 and 42,771.68

Step by Step Solution

1. Step 1: Write the proportion equation
   78,580.88 : 108,440.10 = 42,771.68 : x
2. Step 2: Convert to fraction form
   78,580.88/108,440.10 = 42,771.68/x
3. Step 3: Cross multiply
   78,580.88x = 108,440.10 × 42,771.68
4. Step 4: Simplify right side
   78,580.88x = 4,638,165,256.37
5. Step 5: Solve for x
   x = 4,638,165,256.37/78,580.88
6. Step 6: Final answer
   x = 59,024.09