Finding the Fourth Proportional to 73,983.68, 102,085.56 and 42,153.20

Step by Step Solution

1. Step 1: Write the proportion equation
   73,983.68 : 102,085.56 = 42,153.20 : x
2. Step 2: Convert to fraction form
   73,983.68/102,085.56 = 42,153.20/x
3. Step 3: Cross multiply
   73,983.68x = 102,085.56 × 42,153.20
4. Step 4: Simplify right side
   73,983.68x = 4,303,233,027.79
5. Step 5: Solve for x
   x = 4,303,233,027.79/73,983.68
6. Step 6: Final answer
   x = 58,164.63