Finding the Fourth Proportional to 64,831.56, 89,484.18 and 42,226.86

Step by Step Solution

1. Step 1: Write the proportion equation
   64,831.56 : 89,484.18 = 42,226.86 : x
2. Step 2: Convert to fraction form
   64,831.56/89,484.18 = 42,226.86/x
3. Step 3: Cross multiply
   64,831.56x = 89,484.18 × 42,226.86
4. Step 4: Simplify right side
   64,831.56x = 3,778,635,941.07
5. Step 5: Solve for x
   x = 3,778,635,941.07/64,831.56
6. Step 6: Final answer
   x = 58,283.90