Finding the Fourth Proportional to 287,771.01, 431,695.89 and 98,180.46

Step by Step Solution

1. Step 1: Write the proportion equation
   287,771.01 : 431,695.89 = 98,180.46 : x
2. Step 2: Convert to fraction form
   287,771.01/431,695.89 = 98,180.46/x
3. Step 3: Cross multiply
   287,771.01x = 431,695.89 × 98,180.46
4. Step 4: Simplify right side
   287,771.01x = 42,384,101,060.31
5. Step 5: Solve for x
   x = 42,384,101,060.31/287,771.01
6. Step 6: Final answer
   x = 147,284.12