Finding the Fourth Proportional to 70,978.50, 106,485.75 and 26,605.38

Step by Step Solution

1. Step 1: Write the proportion equation
   70,978.50 : 106,485.75 = 26,605.38 : x
2. Step 2: Convert to fraction form
   70,978.50/106,485.75 = 26,605.38/x
3. Step 3: Cross multiply
   70,978.50x = 106,485.75 × 26,605.38
4. Step 4: Simplify right side
   70,978.50x = 2,833,093,843.34
5. Step 5: Solve for x
   x = 2,833,093,843.34/70,978.50
6. Step 6: Final answer
   x = 39,914.82