Finding the Fourth Proportional to 158,109.89, 236,999.59 and 69,288.53

Step by Step Solution

1. Step 1: Write the proportion equation
   158,109.89 : 236,999.59 = 69,288.53 : x
2. Step 2: Convert to fraction form
   158,109.89/236,999.59 = 69,288.53/x
3. Step 3: Cross multiply
   158,109.89x = 236,999.59 × 69,288.53
4. Step 4: Simplify right side
   158,109.89x = 16,421,351,843.48
5. Step 5: Solve for x
   x = 16,421,351,843.48/158,109.89
6. Step 6: Final answer
   x = 103,860.37