Finding the Fourth Proportional to 70,978.09, 106,540.98 and 52,279.24

Step by Step Solution

1. Step 1: Write the proportion equation
   70,978.09 : 106,540.98 = 52,279.24 : x
2. Step 2: Convert to fraction form
   70,978.09/106,540.98 = 52,279.24/x
3. Step 3: Cross multiply
   70,978.09x = 106,540.98 × 52,279.24
4. Step 4: Simplify right side
   70,978.09x = 5,569,881,463.26
5. Step 5: Solve for x
   x = 5,569,881,463.26/70,978.09
6. Step 6: Final answer
   x = 78,473.25