Finding the Fourth Proportional to 65,663.48, 90,583.98 and 42,992.48

Step by Step Solution

1. Step 1: Write the proportion equation
   65,663.48 : 90,583.98 = 42,992.48 : x
2. Step 2: Convert to fraction form
   65,663.48/90,583.98 = 42,992.48/x
3. Step 3: Cross multiply
   65,663.48x = 90,583.98 × 42,992.48
4. Step 4: Simplify right side
   65,663.48x = 3,894,429,948.47
5. Step 5: Solve for x
   x = 3,894,429,948.47/65,663.48
6. Step 6: Final answer
   x = 59,308.92