Finding the Fourth Proportional to 47,128.69, 70,693.94 and 37,725.05

Step by Step Solution

1. Step 1: Write the proportion equation
   47,128.69 : 70,693.94 = 37,725.05 : x
2. Step 2: Convert to fraction form
   47,128.69/70,693.94 = 37,725.05/x
3. Step 3: Cross multiply
   47,128.69x = 70,693.94 × 37,725.05
4. Step 4: Simplify right side
   47,128.69x = 2,666,932,232.57
5. Step 5: Solve for x
   x = 2,666,932,232.57/47,128.69
6. Step 6: Final answer
   x = 56,588.30