Finding the Fourth Proportional to 105,348.52, 145,420.50 and 69,052.31

Step by Step Solution

1. Step 1: Write the proportion equation
   105,348.52 : 145,420.50 = 69,052.31 : x
2. Step 2: Convert to fraction form
   105,348.52/145,420.50 = 69,052.31/x
3. Step 3: Cross multiply
   105,348.52x = 145,420.50 × 69,052.31
4. Step 4: Simplify right side
   105,348.52x = 10,041,620,823.86
5. Step 5: Solve for x
   x = 10,041,620,823.86/105,348.52
6. Step 6: Final answer
   x = 95,318.10