Finding the Fourth Proportional to 151,379.50, 208,903.72 and 84,311.50

Step by Step Solution

1. Step 1: Write the proportion equation
   151,379.50 : 208,903.72 = 84,311.50 : x
2. Step 2: Convert to fraction form
   151,379.50/208,903.72 = 84,311.50/x
3. Step 3: Cross multiply
   151,379.50x = 208,903.72 × 84,311.50
4. Step 4: Simplify right side
   151,379.50x = 17,612,985,988.78
5. Step 5: Solve for x
   x = 17,612,985,988.78/151,379.50
6. Step 6: Final answer
   x = 116,349.88