Finding the Fourth Proportional to 70,148.16, 105,131.52 and 52,479.36

Step by Step Solution

1. Step 1: Write the proportion equation
   70,148.16 : 105,131.52 = 52,479.36 : x
2. Step 2: Convert to fraction form
   70,148.16/105,131.52 = 52,479.36/x
3. Step 3: Cross multiply
   70,148.16x = 105,131.52 × 52,479.36
4. Step 4: Simplify right side
   70,148.16x = 5,517,234,885.43
5. Step 5: Solve for x
   x = 5,517,234,885.43/70,148.16
6. Step 6: Final answer
   x = 78,651.17