Finding the Fourth Proportional to 72,435.53, 108,631.20 and 50,089.86

Step by Step Solution

1. Step 1: Write the proportion equation
   72,435.53 : 108,631.20 = 50,089.86 : x
2. Step 2: Convert to fraction form
   72,435.53/108,631.20 = 50,089.86/x
3. Step 3: Cross multiply
   72,435.53x = 108,631.20 × 50,089.86
4. Step 4: Simplify right side
   72,435.53x = 5,441,321,599.63
5. Step 5: Solve for x
   x = 5,441,321,599.63/72,435.53
6. Step 6: Final answer
   x = 75,119.52