Finding the Fourth Proportional to 85,530.31, 128,300.73 and 32,939.98

Step by Step Solution

1. Step 1: Write the proportion equation
   85,530.31 : 128,300.73 = 32,939.98 : x
2. Step 2: Convert to fraction form
   85,530.31/128,300.73 = 32,939.98/x
3. Step 3: Cross multiply
   85,530.31x = 128,300.73 × 32,939.98
4. Step 4: Simplify right side
   85,530.31x = 4,226,223,480.19
5. Step 5: Solve for x
   x = 4,226,223,480.19/85,530.31
6. Step 6: Final answer
   x = 49,412.00