Finding the Fourth Proportional to 56,147.78, 77,484.06 and 30,654.15

Step by Step Solution

1. Step 1: Write the proportion equation
   56,147.78 : 77,484.06 = 30,654.15 : x
2. Step 2: Convert to fraction form
   56,147.78/77,484.06 = 30,654.15/x
3. Step 3: Cross multiply
   56,147.78x = 77,484.06 × 30,654.15
4. Step 4: Simplify right side
   56,147.78x = 2,375,207,997.85
5. Step 5: Solve for x
   x = 2,375,207,997.85/56,147.78
6. Step 6: Final answer
   x = 42,302.79