Finding the Fourth Proportional to 56,141.76, 77,475.78 and 30,648.15

Step by Step Solution

1. Step 1: Write the proportion equation
   56,141.76 : 77,475.78 = 30,648.15 : x
2. Step 2: Convert to fraction form
   56,141.76/77,475.78 = 30,648.15/x
3. Step 3: Cross multiply
   56,141.76x = 77,475.78 × 30,648.15
4. Step 4: Simplify right side
   56,141.76x = 2,374,489,326.81
5. Step 5: Solve for x
   x = 2,374,489,326.81/56,141.76
6. Step 6: Final answer
   x = 42,294.53