Finding the Fourth Proportional to 137,667.96, 206,379.60 and 48,909.76

Step by Step Solution

1. Step 1: Write the proportion equation
   137,667.96 : 206,379.60 = 48,909.76 : x
2. Step 2: Convert to fraction form
   137,667.96/206,379.60 = 48,909.76/x
3. Step 3: Cross multiply
   137,667.96x = 206,379.60 × 48,909.76
4. Step 4: Simplify right side
   137,667.96x = 10,093,976,704.90
5. Step 5: Solve for x
   x = 10,093,976,704.90/137,667.96
6. Step 6: Final answer
   x = 73,321.18