Finding the Fourth Proportional to 123,387.30, 185,124.15 and 53,316.90

Step by Step Solution

1. Step 1: Write the proportion equation
   123,387.30 : 185,124.15 = 53,316.90 : x
2. Step 2: Convert to fraction form
   123,387.30/185,124.15 = 53,316.90/x
3. Step 3: Cross multiply
   123,387.30x = 185,124.15 × 53,316.90
4. Step 4: Simplify right side
   123,387.30x = 9,870,245,793.14
5. Step 5: Solve for x
   x = 9,870,245,793.14/123,387.30
6. Step 6: Final answer
   x = 79,994.02