Finding the Fourth Proportional to 105,100.78, 157,646.76 and 48,921.58

Step by Step Solution

1. Step 1: Write the proportion equation
   105,100.78 : 157,646.76 = 48,921.58 : x
2. Step 2: Convert to fraction form
   105,100.78/157,646.76 = 48,921.58/x
3. Step 3: Cross multiply
   105,100.78x = 157,646.76 × 48,921.58
4. Step 4: Simplify right side
   105,100.78x = 7,712,328,581.08
5. Step 5: Solve for x
   x = 7,712,328,581.08/105,100.78
6. Step 6: Final answer
   x = 73,380.32