Finding the Fourth Proportional to 105,633.86, 145,773.48 and 57,234.84

Step by Step Solution

1. Step 1: Write the proportion equation
   105,633.86 : 145,773.48 = 57,234.84 : x
2. Step 2: Convert to fraction form
   105,633.86/145,773.48 = 57,234.84/x
3. Step 3: Cross multiply
   105,633.86x = 145,773.48 × 57,234.84
4. Step 4: Simplify right side
   105,633.86x = 8,343,322,018.67
5. Step 5: Solve for x
   x = 8,343,322,018.67/105,633.86
6. Step 6: Final answer
   x = 78,983.41