Finding the Fourth Proportional to 91,439.30, 137,113.59 and 29,101.70

Step by Step Solution

1. Step 1: Write the proportion equation
   91,439.30 : 137,113.59 = 29,101.70 : x
2. Step 2: Convert to fraction form
   91,439.30/137,113.59 = 29,101.70/x
3. Step 3: Cross multiply
   91,439.30x = 137,113.59 × 29,101.70
4. Step 4: Simplify right side
   91,439.30x = 3,990,238,562.10
5. Step 5: Solve for x
   x = 3,990,238,562.10/91,439.30
6. Step 6: Final answer
   x = 43,638.11