Finding the Fourth Proportional to 69,976.88, 105,015.72 and 34,430.48

Step by Step Solution

1. Step 1: Write the proportion equation
   69,976.88 : 105,015.72 = 34,430.48 : x
2. Step 2: Convert to fraction form
   69,976.88/105,015.72 = 34,430.48/x
3. Step 3: Cross multiply
   69,976.88x = 105,015.72 × 34,430.48
4. Step 4: Simplify right side
   69,976.88x = 3,615,741,647.15
5. Step 5: Solve for x
   x = 3,615,741,647.15/69,976.88
6. Step 6: Final answer
   x = 51,670.52