Finding the Fourth Proportional to 105,266.46, 157,900.37 and 42,091.89

Step by Step Solution

1. Step 1: Write the proportion equation
   105,266.46 : 157,900.37 = 42,091.89 : x
2. Step 2: Convert to fraction form
   105,266.46/157,900.37 = 42,091.89/x
3. Step 3: Cross multiply
   105,266.46x = 157,900.37 × 42,091.89
4. Step 4: Simplify right side
   105,266.46x = 6,646,325,005.00
5. Step 5: Solve for x
   x = 6,646,325,005.00/105,266.46
6. Step 6: Final answer
   x = 63,138.11