Finding the Fourth Proportional to 312,314.31, 430,994.72 and 169,074.01

Step by Step Solution

1. Step 1: Write the proportion equation
   312,314.31 : 430,994.72 = 169,074.01 : x
2. Step 2: Convert to fraction form
   312,314.31/430,994.72 = 169,074.01/x
3. Step 3: Cross multiply
   312,314.31x = 430,994.72 × 169,074.01
4. Step 4: Simplify right side
   312,314.31x = 72,870,006,085.14
5. Step 5: Solve for x
   x = 72,870,006,085.14/312,314.31
6. Step 6: Final answer
   x = 233,322.66