Finding the Fourth Proportional to 77,399.51, 106,830.38 and 47,201.50

Step by Step Solution

1. Step 1: Write the proportion equation
   77,399.51 : 106,830.38 = 47,201.50 : x
2. Step 2: Convert to fraction form
   77,399.51/106,830.38 = 47,201.50/x
3. Step 3: Cross multiply
   77,399.51x = 106,830.38 × 47,201.50
4. Step 4: Simplify right side
   77,399.51x = 5,042,553,411.41
5. Step 5: Solve for x
   x = 5,042,553,411.41/77,399.51
6. Step 6: Final answer
   x = 65,149.68