Finding the Fourth Proportional to 73,983.09, 102,086.49 and 42,145.86

Step by Step Solution

1. Step 1: Write the proportion equation
   73,983.09 : 102,086.49 = 42,145.86 : x
2. Step 2: Convert to fraction form
   73,983.09/102,086.49 = 42,145.86/x
3. Step 3: Cross multiply
   73,983.09x = 102,086.49 × 42,145.86
4. Step 4: Simplify right side
   73,983.09x = 4,302,522,915.43
5. Step 5: Solve for x
   x = 4,302,522,915.43/73,983.09
6. Step 6: Final answer
   x = 58,155.49