Finding the Fourth Proportional to 87,870.63, 121,261.59 and 47,584.47

Step by Step Solution

1. Step 1: Write the proportion equation
   87,870.63 : 121,261.59 = 47,584.47 : x
2. Step 2: Convert to fraction form
   87,870.63/121,261.59 = 47,584.47/x
3. Step 3: Cross multiply
   87,870.63x = 121,261.59 × 47,584.47
4. Step 4: Simplify right side
   87,870.63x = 5,770,168,215.22
5. Step 5: Solve for x
   x = 5,770,168,215.22/87,870.63
6. Step 6: Final answer
   x = 65,666.63