Finding the Fourth Proportional to 70,100.68, 96,741.12 and 39,890.40

Step by Step Solution

1. Step 1: Write the proportion equation
   70,100.68 : 96,741.12 = 39,890.40 : x
2. Step 2: Convert to fraction form
   70,100.68/96,741.12 = 39,890.40/x
3. Step 3: Cross multiply
   70,100.68x = 96,741.12 × 39,890.40
4. Step 4: Simplify right side
   70,100.68x = 3,859,041,973.25
5. Step 5: Solve for x
   x = 3,859,041,973.25/70,100.68
6. Step 6: Final answer
   x = 55,049.99