Finding the Fourth Proportional to 87,525, 120,784.50 and 47,781

Step by Step Solution

1. Step 1: Write the proportion equation
   87,525 : 120,784.50 = 47,781 : x
2. Step 2: Convert to fraction form
   87,525/120,784.50 = 47,781/x
3. Step 3: Cross multiply
   87,525x = 120,784.50 × 47,781
4. Step 4: Simplify right side
   87,525x = 5,771,204,194.50
5. Step 5: Solve for x
   x = 5,771,204,194.50/87,525
6. Step 6: Final answer
   x = 65,937.78