Finding the Fourth Proportional to 47,238.51, 70,815.38 and 43,129.68

Step by Step Solution

1. Step 1: Write the proportion equation
   47,238.51 : 70,815.38 = 43,129.68 : x
2. Step 2: Convert to fraction form
   47,238.51/70,815.38 = 43,129.68/x
3. Step 3: Cross multiply
   47,238.51x = 70,815.38 × 43,129.68
4. Step 4: Simplify right side
   47,238.51x = 3,054,244,462.83
5. Step 5: Solve for x
   x = 3,054,244,462.83/47,238.51
6. Step 6: Final answer
   x = 64,655.82