Finding the Fourth Proportional to 87,911, 121,316.70 and 47,625.54

Step by Step Solution

1. Step 1: Write the proportion equation
   87,911 : 121,316.70 = 47,625.54 : x
2. Step 2: Convert to fraction form
   87,911/121,316.70 = 47,625.54/x
3. Step 3: Cross multiply
   87,911x = 121,316.70 × 47,625.54
4. Step 4: Simplify right side
   87,911x = 5,777,773,348.52
5. Step 5: Solve for x
   x = 5,777,773,348.52/87,911
6. Step 6: Final answer
   x = 65,722.99