Finding the Fourth Proportional to 72,188.42, 108,071.48 and 42,110.69

Step by Step Solution

1. Step 1: Write the proportion equation
   72,188.42 : 108,071.48 = 42,110.69 : x
2. Step 2: Convert to fraction form
   72,188.42/108,071.48 = 42,110.69/x
3. Step 3: Cross multiply
   72,188.42x = 108,071.48 × 42,110.69
4. Step 4: Simplify right side
   72,188.42x = 4,550,964,157.04
5. Step 5: Solve for x
   x = 4,550,964,157.04/72,188.42
6. Step 6: Final answer
   x = 63,042.86