Finding the Fourth Proportional to 72,151.08, 108,190.96 and 42,172.88

Step by Step Solution

1. Step 1: Write the proportion equation
   72,151.08 : 108,190.96 = 42,172.88 : x
2. Step 2: Convert to fraction form
   72,151.08/108,190.96 = 42,172.88/x
3. Step 3: Cross multiply
   72,151.08x = 108,190.96 × 42,172.88
4. Step 4: Simplify right side
   72,151.08x = 4,562,724,373.16
5. Step 5: Solve for x
   x = 4,562,724,373.16/72,151.08
6. Step 6: Final answer
   x = 63,238.48