Finding the Fourth Proportional to 77,345.99, 116,056.31 and 42,284.73

Step by Step Solution

1. Step 1: Write the proportion equation
   77,345.99 : 116,056.31 = 42,284.73 : x
2. Step 2: Convert to fraction form
   77,345.99/116,056.31 = 42,284.73/x
3. Step 3: Cross multiply
   77,345.99x = 116,056.31 × 42,284.73
4. Step 4: Simplify right side
   77,345.99x = 4,907,409,521.72
5. Step 5: Solve for x
   x = 4,907,409,521.72/77,345.99
6. Step 6: Final answer
   x = 63,447.50