Finding the Fourth Proportional to 120,302.52, 165,907.17 and 103,300.98

Step by Step Solution

1. Step 1: Write the proportion equation
   120,302.52 : 165,907.17 = 103,300.98 : x
2. Step 2: Convert to fraction form
   120,302.52/165,907.17 = 103,300.98/x
3. Step 3: Cross multiply
   120,302.52x = 165,907.17 × 103,300.98
4. Step 4: Simplify right side
   120,302.52x = 17,138,373,250.03
5. Step 5: Solve for x
   x = 17,138,373,250.03/120,302.52
6. Step 6: Final answer
   x = 142,460.63