Finding the Fourth Proportional to 42,964.50, 59,316.96 and 28,086.42

Step by Step Solution

1. Step 1: Write the proportion equation
   42,964.50 : 59,316.96 = 28,086.42 : x
2. Step 2: Convert to fraction form
   42,964.50/59,316.96 = 28,086.42/x
3. Step 3: Cross multiply
   42,964.50x = 59,316.96 × 28,086.42
4. Step 4: Simplify right side
   42,964.50x = 1,666,001,051.68
5. Step 5: Solve for x
   x = 1,666,001,051.68/42,964.50
6. Step 6: Final answer
   x = 38,776.22