Finding the Fourth Proportional to 87,128.37, 120,242 and 48,900.01

Step by Step Solution

1. Step 1: Write the proportion equation
   87,128.37 : 120,242 = 48,900.01 : x
2. Step 2: Convert to fraction form
   87,128.37/120,242 = 48,900.01/x
3. Step 3: Cross multiply
   87,128.37x = 120,242 × 48,900.01
4. Step 4: Simplify right side
   87,128.37x = 5,879,835,002.42
5. Step 5: Solve for x
   x = 5,879,835,002.42/87,128.37
6. Step 6: Final answer
   x = 67,484.74