Finding the Fourth Proportional to 78,484.72, 108,308.34 and 42,674.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,484.72 : 108,308.34 = 42,674.76 : x
2. Step 2: Convert to fraction form
   78,484.72/108,308.34 = 42,674.76/x
3. Step 3: Cross multiply
   78,484.72x = 108,308.34 × 42,674.76
4. Step 4: Simplify right side
   78,484.72x = 4,622,032,415.50
5. Step 5: Solve for x
   x = 4,622,032,415.50/78,484.72
6. Step 6: Final answer
   x = 58,890.86