Finding the Fourth Proportional to 140,591.82, 210,622.89 and 69,431.16

Step by Step Solution

1. Step 1: Write the proportion equation
   140,591.82 : 210,622.89 = 69,431.16 : x
2. Step 2: Convert to fraction form
   140,591.82/210,622.89 = 69,431.16/x
3. Step 3: Cross multiply
   140,591.82x = 210,622.89 × 69,431.16
4. Step 4: Simplify right side
   140,591.82x = 14,623,791,575.25
5. Step 5: Solve for x
   x = 14,623,791,575.25/140,591.82
6. Step 6: Final answer
   x = 104,015.95