Finding the Fourth Proportional to 78,038.73, 107,693.25 and 42,228.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,038.73 : 107,693.25 = 42,228.72 : x
2. Step 2: Convert to fraction form
   78,038.73/107,693.25 = 42,228.72/x
3. Step 3: Cross multiply
   78,038.73x = 107,693.25 × 42,228.72
4. Step 4: Simplify right side
   78,038.73x = 4,547,748,100.14
5. Step 5: Solve for x
   x = 4,547,748,100.14/78,038.73
6. Step 6: Final answer
   x = 58,275.53