Finding the Fourth Proportional to 56,147.64, 77,480.42 and 30,648.94

Step by Step Solution

1. Step 1: Write the proportion equation
   56,147.64 : 77,480.42 = 30,648.94 : x
2. Step 2: Convert to fraction form
   56,147.64/77,480.42 = 30,648.94/x
3. Step 3: Cross multiply
   56,147.64x = 77,480.42 × 30,648.94
4. Step 4: Simplify right side
   56,147.64x = 2,374,692,743.75
5. Step 5: Solve for x
   x = 2,374,692,743.75/56,147.64
6. Step 6: Final answer
   x = 42,293.72