Finding the Fourth Proportional to 91,390.05, 137,152.41 and 43,358.83

Step by Step Solution

1. Step 1: Write the proportion equation
   91,390.05 : 137,152.41 = 43,358.83 : x
2. Step 2: Convert to fraction form
   91,390.05/137,152.41 = 43,358.83/x
3. Step 3: Cross multiply
   91,390.05x = 137,152.41 × 43,358.83
4. Step 4: Simplify right side
   91,390.05x = 5,946,768,193.88
5. Step 5: Solve for x
   x = 5,946,768,193.88/91,390.05
6. Step 6: Final answer
   x = 65,070.20