Finding the Fourth Proportional to 210,099.32, 315,151.72 and 69,857.94

Step by Step Solution

1. Step 1: Write the proportion equation
   210,099.32 : 315,151.72 = 69,857.94 : x
2. Step 2: Convert to fraction form
   210,099.32/315,151.72 = 69,857.94/x
3. Step 3: Cross multiply
   210,099.32x = 315,151.72 × 69,857.94
4. Step 4: Simplify right side
   210,099.32x = 22,015,849,597.37
5. Step 5: Solve for x
   x = 22,015,849,597.37/210,099.32
6. Step 6: Final answer
   x = 104,787.82