Finding the Fourth Proportional to 56,141.84, 84,142.24 and 28,069.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,141.84 : 84,142.24 = 28,069.72 : x
2. Step 2: Convert to fraction form
   56,141.84/84,142.24 = 28,069.72/x
3. Step 3: Cross multiply
   56,141.84x = 84,142.24 × 28,069.72
4. Step 4: Simplify right side
   56,141.84x = 2,361,849,116.97
5. Step 5: Solve for x
   x = 2,361,849,116.97/56,141.84
6. Step 6: Final answer
   x = 42,069.32