Finding the Fourth Proportional to 120,305.52, 165,911.31 and 103,303.98

Step by Step Solution

1. Step 1: Write the proportion equation
   120,305.52 : 165,911.31 = 103,303.98 : x
2. Step 2: Convert to fraction form
   120,305.52/165,911.31 = 103,303.98/x
3. Step 3: Cross multiply
   120,305.52x = 165,911.31 × 103,303.98
4. Step 4: Simplify right side
   120,305.52x = 17,139,298,650.01
5. Step 5: Solve for x
   x = 17,139,298,650.01/120,305.52
6. Step 6: Final answer
   x = 142,464.77