Finding the Fourth Proportional to 42,435.69, 58,108.54 and 40,762.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,435.69 : 58,108.54 = 40,762.63 : x
2. Step 2: Convert to fraction form
   42,435.69/58,108.54 = 40,762.63/x
3. Step 3: Cross multiply
   42,435.69x = 58,108.54 × 40,762.63
4. Step 4: Simplify right side
   42,435.69x = 2,368,656,915.86
5. Step 5: Solve for x
   x = 2,368,656,915.86/42,435.69
6. Step 6: Final answer
   x = 55,817.57