Finding the Fourth Proportional to 87,774.41, 121,128.71 and 47,488.15

Step by Step Solution

1. Step 1: Write the proportion equation
   87,774.41 : 121,128.71 = 47,488.15 : x
2. Step 2: Convert to fraction form
   87,774.41/121,128.71 = 47,488.15/x
3. Step 3: Cross multiply
   87,774.41x = 121,128.71 × 47,488.15
4. Step 4: Simplify right side
   87,774.41x = 5,752,178,263.76
5. Step 5: Solve for x
   x = 5,752,178,263.76/87,774.41
6. Step 6: Final answer
   x = 65,533.66