Finding the Fourth Proportional to 65,289.27, 90,066.03 and 42,641.53

Step by Step Solution

1. Step 1: Write the proportion equation
   65,289.27 : 90,066.03 = 42,641.53 : x
2. Step 2: Convert to fraction form
   65,289.27/90,066.03 = 42,641.53/x
3. Step 3: Cross multiply
   65,289.27x = 90,066.03 × 42,641.53
4. Step 4: Simplify right side
   65,289.27x = 3,840,553,320.23
5. Step 5: Solve for x
   x = 3,840,553,320.23/65,289.27
6. Step 6: Final answer
   x = 58,823.65