Finding the Fourth Proportional to 85,477.96, 128,203.98 and 30,061

Step by Step Solution

1. Step 1: Write the proportion equation
   85,477.96 : 128,203.98 = 30,061 : x
2. Step 2: Convert to fraction form
   85,477.96/128,203.98 = 30,061/x
3. Step 3: Cross multiply
   85,477.96x = 128,203.98 × 30,061
4. Step 4: Simplify right side
   85,477.96x = 3,853,939,842.78
5. Step 5: Solve for x
   x = 3,853,939,842.78/85,477.96
6. Step 6: Final answer
   x = 45,086.94