Finding the Fourth Proportional to 90,473.98, 135,667.83 and 40,554.49

Step by Step Solution

1. Step 1: Write the proportion equation
   90,473.98 : 135,667.83 = 40,554.49 : x
2. Step 2: Convert to fraction form
   90,473.98/135,667.83 = 40,554.49/x
3. Step 3: Cross multiply
   90,473.98x = 135,667.83 × 40,554.49
4. Step 4: Simplify right side
   90,473.98x = 5,501,939,655.06
5. Step 5: Solve for x
   x = 5,501,939,655.06/90,473.98
6. Step 6: Final answer
   x = 60,812.40