Finding the Fourth Proportional to 55,789.02, 76,988.34 and 30,638.52

Step by Step Solution

1. Step 1: Write the proportion equation
   55,789.02 : 76,988.34 = 30,638.52 : x
2. Step 2: Convert to fraction form
   55,789.02/76,988.34 = 30,638.52/x
3. Step 3: Cross multiply
   55,789.02x = 76,988.34 × 30,638.52
4. Step 4: Simplify right side
   55,789.02x = 2,358,808,794.86
5. Step 5: Solve for x
   x = 2,358,808,794.86/55,789.02
6. Step 6: Final answer
   x = 42,280.88