Finding the Fourth Proportional to 152,131.34, 227,903.79 and 85,367.90

Step by Step Solution

1. Step 1: Write the proportion equation
   152,131.34 : 227,903.79 = 85,367.90 : x
2. Step 2: Convert to fraction form
   152,131.34/227,903.79 = 85,367.90/x
3. Step 3: Cross multiply
   152,131.34x = 227,903.79 × 85,367.90
4. Step 4: Simplify right side
   152,131.34x = 19,455,667,954.34
5. Step 5: Solve for x
   x = 19,455,667,954.34/152,131.34
6. Step 6: Final answer
   x = 127,887.31