Finding the Fourth Proportional to 140,389.16, 210,667.10 and 51,704.87

Step by Step Solution

1. Step 1: Write the proportion equation
   140,389.16 : 210,667.10 = 51,704.87 : x
2. Step 2: Convert to fraction form
   140,389.16/210,667.10 = 51,704.87/x
3. Step 3: Cross multiply
   140,389.16x = 210,667.10 × 51,704.87
4. Step 4: Simplify right side
   140,389.16x = 10,892,513,706.92
5. Step 5: Solve for x
   x = 10,892,513,706.92/140,389.16
6. Step 6: Final answer
   x = 77,588.00