Finding the Fourth Proportional to 431,111.37, 646,699.86 and 146,713.89

Step by Step Solution

1. Step 1: Write the proportion equation
   431,111.37 : 646,699.86 = 146,713.89 : x
2. Step 2: Convert to fraction form
   431,111.37/646,699.86 = 146,713.89/x
3. Step 3: Cross multiply
   431,111.37x = 646,699.86 × 146,713.89
4. Step 4: Simplify right side
   431,111.37x = 94,879,852,123.06
5. Step 5: Solve for x
   x = 94,879,852,123.06/431,111.37
6. Step 6: Final answer
   x = 220,082.00