Finding the Fourth Proportional to 152,581.96, 210,551.70 and 85,501

Step by Step Solution

1. Step 1: Write the proportion equation
   152,581.96 : 210,551.70 = 85,501 : x
2. Step 2: Convert to fraction form
   152,581.96/210,551.70 = 85,501/x
3. Step 3: Cross multiply
   152,581.96x = 210,551.70 × 85,501
4. Step 4: Simplify right side
   152,581.96x = 18,002,380,901.70
5. Step 5: Solve for x
   x = 18,002,380,901.70/152,581.96
6. Step 6: Final answer
   x = 117,984.99