Finding the Fourth Proportional to 158,620.06, 218,901.81 and 87,003.10

Step by Step Solution

1. Step 1: Write the proportion equation
   158,620.06 : 218,901.81 = 87,003.10 : x
2. Step 2: Convert to fraction form
   158,620.06/218,901.81 = 87,003.10/x
3. Step 3: Cross multiply
   158,620.06x = 218,901.81 × 87,003.10
4. Step 4: Simplify right side
   158,620.06x = 19,045,136,065.61
5. Step 5: Solve for x
   x = 19,045,136,065.61/158,620.06
6. Step 6: Final answer
   x = 120,067.64