Finding the Fourth Proportional to 321,443.60, 482,118.01 and 84,802.91

Step by Step Solution

1. Step 1: Write the proportion equation
   321,443.60 : 482,118.01 = 84,802.91 : x
2. Step 2: Convert to fraction form
   321,443.60/482,118.01 = 84,802.91/x
3. Step 3: Cross multiply
   321,443.60x = 482,118.01 × 84,802.91
4. Step 4: Simplify right side
   321,443.60x = 40,885,007,588.81
5. Step 5: Solve for x
   x = 40,885,007,588.81/321,443.60
6. Step 6: Final answer
   x = 127,191.86