Finding the Fourth Proportional to 70,141.68, 96,731.42 and 54,830.25

Step by Step Solution

1. Step 1: Write the proportion equation
   70,141.68 : 96,731.42 = 54,830.25 : x
2. Step 2: Convert to fraction form
   70,141.68/96,731.42 = 54,830.25/x
3. Step 3: Cross multiply
   70,141.68x = 96,731.42 × 54,830.25
4. Step 4: Simplify right side
   70,141.68x = 5,303,807,667.30
5. Step 5: Solve for x
   x = 5,303,807,667.30/70,141.68
6. Step 6: Final answer
   x = 75,615.63