Finding the Fourth Proportional to 78,032.28, 107,685.33 and 42,222.99

Step by Step Solution

1. Step 1: Write the proportion equation
   78,032.28 : 107,685.33 = 42,222.99 : x
2. Step 2: Convert to fraction form
   78,032.28/107,685.33 = 42,222.99/x
3. Step 3: Cross multiply
   78,032.28x = 107,685.33 × 42,222.99
4. Step 4: Simplify right side
   78,032.28x = 4,546,796,611.74
5. Step 5: Solve for x
   x = 4,546,796,611.74/78,032.28
6. Step 6: Final answer
   x = 58,268.15