Finding the Fourth Proportional to 126,172.86, 174,111.03 and 72,466.62

Step by Step Solution

1. Step 1: Write the proportion equation
   126,172.86 : 174,111.03 = 72,466.62 : x
2. Step 2: Convert to fraction form
   126,172.86/174,111.03 = 72,466.62/x
3. Step 3: Cross multiply
   126,172.86x = 174,111.03 × 72,466.62
4. Step 4: Simplify right side
   126,172.86x = 12,617,237,848.82
5. Step 5: Solve for x
   x = 12,617,237,848.82/126,172.86
6. Step 6: Final answer
   x = 99,999.62