Finding the Fourth Proportional to 56,065.32, 77,370.76 and 30,915.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,065.32 : 77,370.76 = 30,915.72 : x
2. Step 2: Convert to fraction form
   56,065.32/77,370.76 = 30,915.72/x
3. Step 3: Cross multiply
   56,065.32x = 77,370.76 × 30,915.72
4. Step 4: Simplify right side
   56,065.32x = 2,391,972,752.35
5. Step 5: Solve for x
   x = 2,391,972,752.35/56,065.32
6. Step 6: Final answer
   x = 42,664.03