Finding the Fourth Proportional to 314,013.60, 471,025.80 and 89,379.81

Step by Step Solution

1. Step 1: Write the proportion equation
   314,013.60 : 471,025.80 = 89,379.81 : x
2. Step 2: Convert to fraction form
   314,013.60/471,025.80 = 89,379.81/x
3. Step 3: Cross multiply
   314,013.60x = 471,025.80 × 89,379.81
4. Step 4: Simplify right side
   314,013.60x = 42,100,196,509.10
5. Step 5: Solve for x
   x = 42,100,196,509.10/314,013.60
6. Step 6: Final answer
   x = 134,071.25