Finding the Fourth Proportional to 102,478.50, 153,743.73 and 28,606.50

Step by Step Solution

1. Step 1: Write the proportion equation
   102,478.50 : 153,743.73 = 28,606.50 : x
2. Step 2: Convert to fraction form
   102,478.50/153,743.73 = 28,606.50/x
3. Step 3: Cross multiply
   102,478.50x = 153,743.73 × 28,606.50
4. Step 4: Simplify right side
   102,478.50x = 4,398,070,012.25
5. Step 5: Solve for x
   x = 4,398,070,012.25/102,478.50
6. Step 6: Final answer
   x = 42,917.00