Finding the Fourth Proportional to 72,131.58, 108,253.17 and 47,164.86

Step by Step Solution

1. Step 1: Write the proportion equation
   72,131.58 : 108,253.17 = 47,164.86 : x
2. Step 2: Convert to fraction form
   72,131.58/108,253.17 = 47,164.86/x
3. Step 3: Cross multiply
   72,131.58x = 108,253.17 × 47,164.86
4. Step 4: Simplify right side
   72,131.58x = 5,105,745,607.61
5. Step 5: Solve for x
   x = 5,105,745,607.61/72,131.58
6. Step 6: Final answer
   x = 70,783.78