Finding the Fourth Proportional to 120,350.52, 166,031.43 and 72,577.32

Step by Step Solution

1. Step 1: Write the proportion equation
   120,350.52 : 166,031.43 = 72,577.32 : x
2. Step 2: Convert to fraction form
   120,350.52/166,031.43 = 72,577.32/x
3. Step 3: Cross multiply
   120,350.52x = 166,031.43 × 72,577.32
4. Step 4: Simplify right side
   120,350.52x = 12,050,116,225.17
5. Step 5: Solve for x
   x = 12,050,116,225.17/120,350.52
6. Step 6: Final answer
   x = 100,125.17