Finding the Fourth Proportional to 48,679.60, 72,667.27 and 42,774.70

Step by Step Solution

1. Step 1: Write the proportion equation
   48,679.60 : 72,667.27 = 42,774.70 : x
2. Step 2: Convert to fraction form
   48,679.60/72,667.27 = 42,774.70/x
3. Step 3: Cross multiply
   48,679.60x = 72,667.27 × 42,774.70
4. Step 4: Simplify right side
   48,679.60x = 3,108,320,674.07
5. Step 5: Solve for x
   x = 3,108,320,674.07/48,679.60
6. Step 6: Final answer
   x = 63,852.63