Finding the Fourth Proportional to 120,180.86, 165,848.52 and 66,464.72

Step by Step Solution

1. Step 1: Write the proportion equation
   120,180.86 : 165,848.52 = 66,464.72 : x
2. Step 2: Convert to fraction form
   120,180.86/165,848.52 = 66,464.72/x
3. Step 3: Cross multiply
   120,180.86x = 165,848.52 × 66,464.72
4. Step 4: Simplify right side
   120,180.86x = 11,023,075,486.15
5. Step 5: Solve for x
   x = 11,023,075,486.15/120,180.86
6. Step 6: Final answer
   x = 91,720.72