Finding the Fourth Proportional to 70,978.33, 106,467.50 and 18,387.82

Step by Step Solution

1. Step 1: Write the proportion equation
   70,978.33 : 106,467.50 = 18,387.82 : x
2. Step 2: Convert to fraction form
   70,978.33/106,467.50 = 18,387.82/x
3. Step 3: Cross multiply
   70,978.33x = 106,467.50 × 18,387.82
4. Step 4: Simplify right side
   70,978.33x = 1,957,705,225.85
5. Step 5: Solve for x
   x = 1,957,705,225.85/70,978.33
6. Step 6: Final answer
   x = 27,581.73