Finding the Fourth Proportional to 78,345.30, 117,568.35 and 43,310.10

Step by Step Solution

1. Step 1: Write the proportion equation
   78,345.30 : 117,568.35 = 43,310.10 : x
2. Step 2: Convert to fraction form
   78,345.30/117,568.35 = 43,310.10/x
3. Step 3: Cross multiply
   78,345.30x = 117,568.35 × 43,310.10
4. Step 4: Simplify right side
   78,345.30x = 5,091,896,995.34
5. Step 5: Solve for x
   x = 5,091,896,995.34/78,345.30
6. Step 6: Final answer
   x = 64,993.01