Finding the Fourth Proportional to 102,028.50, 153,051.57 and 28,156.50

Step by Step Solution

1. Step 1: Write the proportion equation
   102,028.50 : 153,051.57 = 28,156.50 : x
2. Step 2: Convert to fraction form
   102,028.50/153,051.57 = 28,156.50/x
3. Step 3: Cross multiply
   102,028.50x = 153,051.57 × 28,156.50
4. Step 4: Simplify right side
   102,028.50x = 4,309,396,530.71
5. Step 5: Solve for x
   x = 4,309,396,530.71/102,028.50
6. Step 6: Final answer
   x = 42,237.18