Finding the Fourth Proportional to 56,018.32, 77,304.40 and 30,868.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,018.32 : 77,304.40 = 30,868.72 : x
2. Step 2: Convert to fraction form
   56,018.32/77,304.40 = 30,868.72/x
3. Step 3: Cross multiply
   56,018.32x = 77,304.40 × 30,868.72
4. Step 4: Simplify right side
   56,018.32x = 2,386,287,878.37
5. Step 5: Solve for x
   x = 2,386,287,878.37/56,018.32
6. Step 6: Final answer
   x = 42,598.35