Finding the Fourth Proportional to 56,056.32, 77,358.30 and 30,906.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,056.32 : 77,358.30 = 30,906.72 : x
2. Step 2: Convert to fraction form
   56,056.32/77,358.30 = 30,906.72/x
3. Step 3: Cross multiply
   56,056.32x = 77,358.30 × 30,906.72
4. Step 4: Simplify right side
   56,056.32x = 2,390,891,317.78
5. Step 5: Solve for x
   x = 2,390,891,317.78/56,056.32
6. Step 6: Final answer
   x = 42,651.59