Finding the Fourth Proportional to 159,162.71, 219,637.71 and 87,538.10

Step by Step Solution

1. Step 1: Write the proportion equation
   159,162.71 : 219,637.71 = 87,538.10 : x
2. Step 2: Convert to fraction form
   159,162.71/219,637.71 = 87,538.10/x
3. Step 3: Cross multiply
   159,162.71x = 219,637.71 × 87,538.10
4. Step 4: Simplify right side
   159,162.71x = 19,226,666,723.56
5. Step 5: Solve for x
   x = 19,226,666,723.56/159,162.71
6. Step 6: Final answer
   x = 120,798.82