Finding the Fourth Proportional to 78,415.79, 108,214.23 and 42,606.09

Step by Step Solution

1. Step 1: Write the proportion equation
   78,415.79 : 108,214.23 = 42,606.09 : x
2. Step 2: Convert to fraction form
   78,415.79/108,214.23 = 42,606.09/x
3. Step 3: Cross multiply
   78,415.79x = 108,214.23 × 42,606.09
4. Step 4: Simplify right side
   78,415.79x = 4,610,585,222.66
5. Step 5: Solve for x
   x = 4,610,585,222.66/78,415.79
6. Step 6: Final answer
   x = 58,796.65