Finding the Fourth Proportional to 72,707.56, 108,866.84 and 42,697.06

Step by Step Solution

1. Step 1: Write the proportion equation
   72,707.56 : 108,866.84 = 42,697.06 : x
2. Step 2: Convert to fraction form
   72,707.56/108,866.84 = 42,697.06/x
3. Step 3: Cross multiply
   72,707.56x = 108,866.84 × 42,697.06
4. Step 4: Simplify right side
   72,707.56x = 4,648,293,513.84
5. Step 5: Solve for x
   x = 4,648,293,513.84/72,707.56
6. Step 6: Final answer
   x = 63,931.37