Finding the Fourth Proportional to 78,552.56, 108,402.40 and 42,742.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,552.56 : 108,402.40 = 42,742.38 : x
2. Step 2: Convert to fraction form
   78,552.56/108,402.40 = 42,742.38/x
3. Step 3: Cross multiply
   78,552.56x = 108,402.40 × 42,742.38
4. Step 4: Simplify right side
   78,552.56x = 4,633,376,573.71
5. Step 5: Solve for x
   x = 4,633,376,573.71/78,552.56
6. Step 6: Final answer
   x = 58,984.41