Finding the Fourth Proportional to 150,870.96, 208,178.80 and 87,196.48

Step by Step Solution

1. Step 1: Write the proportion equation
   150,870.96 : 208,178.80 = 87,196.48 : x
2. Step 2: Convert to fraction form
   150,870.96/208,178.80 = 87,196.48/x
3. Step 3: Cross multiply
   150,870.96x = 208,178.80 × 87,196.48
4. Step 4: Simplify right side
   150,870.96x = 18,152,458,570.62
5. Step 5: Solve for x
   x = 18,152,458,570.62/150,870.96
6. Step 6: Final answer
   x = 120,317.78