Finding the Fourth Proportional to 140,151.30, 210,184.47 and 51,412.02

Step by Step Solution

1. Step 1: Write the proportion equation
   140,151.30 : 210,184.47 = 51,412.02 : x
2. Step 2: Convert to fraction form
   140,151.30/210,184.47 = 51,412.02/x
3. Step 3: Cross multiply
   140,151.30x = 210,184.47 × 51,412.02
4. Step 4: Simplify right side
   140,151.30x = 10,806,008,175.33
5. Step 5: Solve for x
   x = 10,806,008,175.33/140,151.30
6. Step 6: Final answer
   x = 77,102.45