Finding the Fourth Proportional to 105,030.72, 157,476.42 and 55,050.48

Step by Step Solution

1. Step 1: Write the proportion equation
   105,030.72 : 157,476.42 = 55,050.48 : x
2. Step 2: Convert to fraction form
   105,030.72/157,476.42 = 55,050.48/x
3. Step 3: Cross multiply
   105,030.72x = 157,476.42 × 55,050.48
4. Step 4: Simplify right side
   105,030.72x = 8,669,152,509.68
5. Step 5: Solve for x
   x = 8,669,152,509.68/105,030.72
6. Step 6: Final answer
   x = 82,539.21