Finding the Fourth Proportional to 56,142.84, 84,143.74 and 28,070.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,142.84 : 84,143.74 = 28,070.72 : x
2. Step 2: Convert to fraction form
   56,142.84/84,143.74 = 28,070.72/x
3. Step 3: Cross multiply
   56,142.84x = 84,143.74 × 28,070.72
4. Step 4: Simplify right side
   56,142.84x = 2,361,975,365.29
5. Step 5: Solve for x
   x = 2,361,975,365.29/56,142.84
6. Step 6: Final answer
   x = 42,070.82