Finding the Fourth Proportional to 64,842.98, 89,500.37 and 42,243.98

Step by Step Solution

1. Step 1: Write the proportion equation
   64,842.98 : 89,500.37 = 42,243.98 : x
2. Step 2: Convert to fraction form
   64,842.98/89,500.37 = 42,243.98/x
3. Step 3: Cross multiply
   64,842.98x = 89,500.37 × 42,243.98
4. Step 4: Simplify right side
   64,842.98x = 3,780,851,181.55
5. Step 5: Solve for x
   x = 3,780,851,181.55/64,842.98
6. Step 6: Final answer
   x = 58,307.80