Finding the Fourth Proportional to 105,029.69, 157,484.05 and 45,837.05

Step by Step Solution

1. Step 1: Write the proportion equation
   105,029.69 : 157,484.05 = 45,837.05 : x
2. Step 2: Convert to fraction form
   105,029.69/157,484.05 = 45,837.05/x
3. Step 3: Cross multiply
   105,029.69x = 157,484.05 × 45,837.05
4. Step 4: Simplify right side
   105,029.69x = 7,218,603,372.04
5. Step 5: Solve for x
   x = 7,218,603,372.04/105,029.69
6. Step 6: Final answer
   x = 68,729.17