Finding the Fourth Proportional to 85,748.69, 128,623.11 and 35,801.56

Step by Step Solution

1. Step 1: Write the proportion equation
   85,748.69 : 128,623.11 = 35,801.56 : x
2. Step 2: Convert to fraction form
   85,748.69/128,623.11 = 35,801.56/x
3. Step 3: Cross multiply
   85,748.69x = 128,623.11 × 35,801.56
4. Step 4: Simplify right side
   85,748.69x = 4,604,908,016.57
5. Step 5: Solve for x
   x = 4,604,908,016.57/85,748.69
6. Step 6: Final answer
   x = 53,702.37