Finding the Fourth Proportional to 91,031.04, 136,366.34 and 42,933.78

Step by Step Solution

1. Step 1: Write the proportion equation
   91,031.04 : 136,366.34 = 42,933.78 : x
2. Step 2: Convert to fraction form
   91,031.04/136,366.34 = 42,933.78/x
3. Step 3: Cross multiply
   91,031.04x = 136,366.34 × 42,933.78
4. Step 4: Simplify right side
   91,031.04x = 5,854,722,226.30
5. Step 5: Solve for x
   x = 5,854,722,226.30/91,031.04
6. Step 6: Final answer
   x = 64,315.67