Finding the Fourth Proportional to 120,002.52, 165,603.54 and 65,555.42

Step by Step Solution

1. Step 1: Write the proportion equation
   120,002.52 : 165,603.54 = 65,555.42 : x
2. Step 2: Convert to fraction form
   120,002.52/165,603.54 = 65,555.42/x
3. Step 3: Cross multiply
   120,002.52x = 165,603.54 × 65,555.42
4. Step 4: Simplify right side
   120,002.52x = 10,856,209,618.19
5. Step 5: Solve for x
   x = 10,856,209,618.19/120,002.52
6. Step 6: Final answer
   x = 90,466.51