Finding the Fourth Proportional to 78,326.69, 108,090.92 and 42,516.70

Step by Step Solution

1. Step 1: Write the proportion equation
   78,326.69 : 108,090.92 = 42,516.70 : x
2. Step 2: Convert to fraction form
   78,326.69/108,090.92 = 42,516.70/x
3. Step 3: Cross multiply
   78,326.69x = 108,090.92 × 42,516.70
4. Step 4: Simplify right side
   78,326.69x = 4,595,669,054.43
5. Step 5: Solve for x
   x = 4,595,669,054.43/78,326.69
6. Step 6: Final answer
   x = 58,673.10