Finding the Fourth Proportional to 105,243.58, 157,870.84 and 52,635.30

Step by Step Solution

1. Step 1: Write the proportion equation
   105,243.58 : 157,870.84 = 52,635.30 : x
2. Step 2: Convert to fraction form
   105,243.58/157,870.84 = 52,635.30/x
3. Step 3: Cross multiply
   105,243.58x = 157,870.84 × 52,635.30
4. Step 4: Simplify right side
   105,243.58x = 8,309,579,024.65
5. Step 5: Solve for x
   x = 8,309,579,024.65/105,243.58
6. Step 6: Final answer
   x = 78,955.69