Finding the Fourth Proportional to 333,870.51, 501,305.98 and 289,030.13

Step by Step Solution

1. Step 1: Write the proportion equation
   333,870.51 : 501,305.98 = 289,030.13 : x
2. Step 2: Convert to fraction form
   333,870.51/501,305.98 = 289,030.13/x
3. Step 3: Cross multiply
   333,870.51x = 501,305.98 × 289,030.13
4. Step 4: Simplify right side
   333,870.51x = 144,892,532,569.18
5. Step 5: Solve for x
   x = 144,892,532,569.18/333,870.51
6. Step 6: Final answer
   x = 433,978.23