Finding the Fourth Proportional to 142,109.64, 213,185.52 and 47,308.86

Step by Step Solution

1. Step 1: Write the proportion equation
   142,109.64 : 213,185.52 = 47,308.86 : x
2. Step 2: Convert to fraction form
   142,109.64/213,185.52 = 47,308.86/x
3. Step 3: Cross multiply
   142,109.64x = 213,185.52 × 47,308.86
4. Step 4: Simplify right side
   142,109.64x = 10,085,563,919.71
5. Step 5: Solve for x
   x = 10,085,563,919.71/142,109.64
6. Step 6: Final answer
   x = 70,970.30