Finding the Fourth Proportional to 60,789.60, 91,216 and 45,994.16

Step by Step Solution

1. Step 1: Write the proportion equation
   60,789.60 : 91,216 = 45,994.16 : x
2. Step 2: Convert to fraction form
   60,789.60/91,216 = 45,994.16/x
3. Step 3: Cross multiply
   60,789.60x = 91,216 × 45,994.16
4. Step 4: Simplify right side
   60,789.60x = 4,195,403,298.56
5. Step 5: Solve for x
   x = 4,195,403,298.56/60,789.60
6. Step 6: Final answer
   x = 69,015.15