Finding the Fourth Proportional to 105,333.21, 157,967.69 and 55,386.21

Step by Step Solution

1. Step 1: Write the proportion equation
   105,333.21 : 157,967.69 = 55,386.21 : x
2. Step 2: Convert to fraction form
   105,333.21/157,967.69 = 55,386.21/x
3. Step 3: Cross multiply
   105,333.21x = 157,967.69 × 55,386.21
4. Step 4: Simplify right side
   105,333.21x = 8,749,231,374.62
5. Step 5: Solve for x
   x = 8,749,231,374.62/105,333.21
6. Step 6: Final answer
   x = 83,062.42