Finding the Fourth Proportional to 78,484.41, 108,307.70 and 42,674.43

Step by Step Solution

1. Step 1: Write the proportion equation
   78,484.41 : 108,307.70 = 42,674.43 : x
2. Step 2: Convert to fraction form
   78,484.41/108,307.70 = 42,674.43/x
3. Step 3: Cross multiply
   78,484.41x = 108,307.70 × 42,674.43
4. Step 4: Simplify right side
   78,484.41x = 4,621,969,142.66
5. Step 5: Solve for x
   x = 4,621,969,142.66/78,484.41
6. Step 6: Final answer
   x = 58,890.28