Finding the Fourth Proportional to 140,351.55, 210,610.70 and 51,667.34

Step by Step Solution

1. Step 1: Write the proportion equation
   140,351.55 : 210,610.70 = 51,667.34 : x
2. Step 2: Convert to fraction form
   140,351.55/210,610.70 = 51,667.34/x
3. Step 3: Cross multiply
   140,351.55x = 210,610.70 × 51,667.34
4. Step 4: Simplify right side
   140,351.55x = 10,881,693,526.90
5. Step 5: Solve for x
   x = 10,881,693,526.90/140,351.55
6. Step 6: Final answer
   x = 77,531.70