Finding the Fourth Proportional to 65,298.05, 90,111.34 and 38,457.08

Step by Step Solution

1. Step 1: Write the proportion equation
   65,298.05 : 90,111.34 = 38,457.08 : x
2. Step 2: Convert to fraction form
   65,298.05/90,111.34 = 38,457.08/x
3. Step 3: Cross multiply
   65,298.05x = 90,111.34 × 38,457.08
4. Step 4: Simplify right side
   65,298.05x = 3,465,418,730.40
5. Step 5: Solve for x
   x = 3,465,418,730.40/65,298.05
6. Step 6: Final answer
   x = 53,070.79