Finding the Fourth Proportional to 42,555.78, 58,683.42 and 28,210.62

Step by Step Solution

1. Step 1: Write the proportion equation
   42,555.78 : 58,683.42 = 28,210.62 : x
2. Step 2: Convert to fraction form
   42,555.78/58,683.42 = 28,210.62/x
3. Step 3: Cross multiply
   42,555.78x = 58,683.42 × 28,210.62
4. Step 4: Simplify right side
   42,555.78x = 1,655,495,661.92
5. Step 5: Solve for x
   x = 1,655,495,661.92/42,555.78
6. Step 6: Final answer
   x = 38,901.78