Finding the Fourth Proportional to 314,199.72, 471,228.57 and 89,555.31

Step by Step Solution

1. Step 1: Write the proportion equation
   314,199.72 : 471,228.57 = 89,555.31 : x
2. Step 2: Convert to fraction form
   314,199.72/471,228.57 = 89,555.31/x
3. Step 3: Cross multiply
   314,199.72x = 471,228.57 × 89,555.31
4. Step 4: Simplify right side
   314,199.72x = 42,201,020,667.21
5. Step 5: Solve for x
   x = 42,201,020,667.21/314,199.72
6. Step 6: Final answer
   x = 134,312.73