Finding the Fourth Proportional to 70,947.16, 106,393.02 and 30,978.34

Step by Step Solution

1. Step 1: Write the proportion equation
   70,947.16 : 106,393.02 = 30,978.34 : x
2. Step 2: Convert to fraction form
   70,947.16/106,393.02 = 30,978.34/x
3. Step 3: Cross multiply
   70,947.16x = 106,393.02 × 30,978.34
4. Step 4: Simplify right side
   70,947.16x = 3,295,879,147.19
5. Step 5: Solve for x
   x = 3,295,879,147.19/70,947.16
6. Step 6: Final answer
   x = 46,455.41