Finding the Fourth Proportional to 42,683.10, 59,639.70 and 42,683.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,683.10 : 59,639.70 = 42,683.10 : x
2. Step 2: Convert to fraction form
   42,683.10/59,639.70 = 42,683.10/x
3. Step 3: Cross multiply
   42,683.10x = 59,639.70 × 42,683.10
4. Step 4: Simplify right side
   42,683.10x = 2,545,607,279.07
5. Step 5: Solve for x
   x = 2,545,607,279.07/42,683.10
6. Step 6: Final answer
   x = 59,639.70