Finding the Fourth Proportional to 42,842.22, 64,274.42 and 25,087.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,842.22 : 64,274.42 = 25,087.88 : x
2. Step 2: Convert to fraction form
   42,842.22/64,274.42 = 25,087.88/x
3. Step 3: Cross multiply
   42,842.22x = 64,274.42 × 25,087.88
4. Step 4: Simplify right side
   42,842.22x = 1,612,509,279.95
5. Step 5: Solve for x
   x = 1,612,509,279.95/42,842.22
6. Step 6: Final answer
   x = 37,638.32