Finding the Fourth Proportional to 314,078.76, 471,120.91 and 89,439.03

Step by Step Solution

1. Step 1: Write the proportion equation
   314,078.76 : 471,120.91 = 89,439.03 : x
2. Step 2: Convert to fraction form
   314,078.76/471,120.91 = 89,439.03/x
3. Step 3: Cross multiply
   314,078.76x = 471,120.91 × 89,439.03
4. Step 4: Simplify right side
   314,078.76x = 42,136,596,979.52
5. Step 5: Solve for x
   x = 42,136,596,979.52/314,078.76
6. Step 6: Final answer
   x = 134,159.33