Finding the Fourth Proportional to 108,303.50, 162,319.77 and 52,128.59

Step by Step Solution

1. Step 1: Write the proportion equation
   108,303.50 : 162,319.77 = 52,128.59 : x
2. Step 2: Convert to fraction form
   108,303.50/162,319.77 = 52,128.59/x
3. Step 3: Cross multiply
   108,303.50x = 162,319.77 × 52,128.59
4. Step 4: Simplify right side
   108,303.50x = 8,461,499,927.63
5. Step 5: Solve for x
   x = 8,461,499,927.63/108,303.50
6. Step 6: Final answer
   x = 78,127.67