Finding the Fourth Proportional to 105,415.56, 158,090.81 and 55,468.53

Step by Step Solution

1. Step 1: Write the proportion equation
   105,415.56 : 158,090.81 = 55,468.53 : x
2. Step 2: Convert to fraction form
   105,415.56/158,090.81 = 55,468.53/x
3. Step 3: Cross multiply
   105,415.56x = 158,090.81 × 55,468.53
4. Step 4: Simplify right side
   105,415.56x = 8,769,064,559.87
5. Step 5: Solve for x
   x = 8,769,064,559.87/105,415.56
6. Step 6: Final answer
   x = 83,185.68