Finding the Fourth Proportional to 42,870.72, 59,191.92 and 27,770.88

Step by Step Solution

1. Step 1: Write the proportion equation
   42,870.72 : 59,191.92 = 27,770.88 : x
2. Step 2: Convert to fraction form
   42,870.72/59,191.92 = 27,770.88/x
3. Step 3: Cross multiply
   42,870.72x = 59,191.92 × 27,770.88
4. Step 4: Simplify right side
   42,870.72x = 1,643,811,707.29
5. Step 5: Solve for x
   x = 1,643,811,707.29/42,870.72
6. Step 6: Final answer
   x = 38,343.46