Finding the Fourth Proportional to 272,022.10, 408,071.55 and 85,014.10

Step by Step Solution

1. Step 1: Write the proportion equation
   272,022.10 : 408,071.55 = 85,014.10 : x
2. Step 2: Convert to fraction form
   272,022.10/408,071.55 = 85,014.10/x
3. Step 3: Cross multiply
   272,022.10x = 408,071.55 × 85,014.10
4. Step 4: Simplify right side
   272,022.10x = 34,691,835,558.86
5. Step 5: Solve for x
   x = 34,691,835,558.86/272,022.10
6. Step 6: Final answer
   x = 127,533.15