Finding the Fourth Proportional to 103,633.86, 143,002.02 and 65,378.96

Step by Step Solution

1. Step 1: Write the proportion equation
   103,633.86 : 143,002.02 = 65,378.96 : x
2. Step 2: Convert to fraction form
   103,633.86/143,002.02 = 65,378.96/x
3. Step 3: Cross multiply
   103,633.86x = 143,002.02 × 65,378.96
4. Step 4: Simplify right side
   103,633.86x = 9,349,323,345.50
5. Step 5: Solve for x
   x = 9,349,323,345.50/103,633.86
6. Step 6: Final answer
   x = 90,214.95