Finding the Fourth Proportional to 142,129.64, 213,123.06 and 47,326.31

Step by Step Solution

1. Step 1: Write the proportion equation
   142,129.64 : 213,123.06 = 47,326.31 : x
2. Step 2: Convert to fraction form
   142,129.64/213,123.06 = 47,326.31/x
3. Step 3: Cross multiply
   142,129.64x = 213,123.06 × 47,326.31
4. Step 4: Simplify right side
   142,129.64x = 10,086,328,005.71
5. Step 5: Solve for x
   x = 10,086,328,005.71/142,129.64
6. Step 6: Final answer
   x = 70,965.69