Finding the Fourth Proportional to 70,128.79, 96,778.50 and 38,298.62

Step by Step Solution

1. Step 1: Write the proportion equation
   70,128.79 : 96,778.50 = 38,298.62 : x
2. Step 2: Convert to fraction form
   70,128.79/96,778.50 = 38,298.62/x
3. Step 3: Cross multiply
   70,128.79x = 96,778.50 × 38,298.62
4. Step 4: Simplify right side
   70,128.79x = 3,706,483,094.00
5. Step 5: Solve for x
   x = 3,706,483,094.00/70,128.79
6. Step 6: Final answer
   x = 52,852.52