Finding the Fourth Proportional to 77,584.76, 107,063.52 and 47,420.48

Step by Step Solution

1. Step 1: Write the proportion equation
   77,584.76 : 107,063.52 = 47,420.48 : x
2. Step 2: Convert to fraction form
   77,584.76/107,063.52 = 47,420.48/x
3. Step 3: Cross multiply
   77,584.76x = 107,063.52 × 47,420.48
4. Step 4: Simplify right side
   77,584.76x = 5,077,003,508.89
5. Step 5: Solve for x
   x = 5,077,003,508.89/77,584.76
6. Step 6: Final answer
   x = 65,438.15