Finding the Fourth Proportional to 91,748.30, 137,647.05 and 73,098.65

Step by Step Solution

1. Step 1: Write the proportion equation
   91,748.30 : 137,647.05 = 73,098.65 : x
2. Step 2: Convert to fraction form
   91,748.30/137,647.05 = 73,098.65/x
3. Step 3: Cross multiply
   91,748.30x = 137,647.05 × 73,098.65
4. Step 4: Simplify right side
   91,748.30x = 10,061,813,601.48
5. Step 5: Solve for x
   x = 10,061,813,601.48/91,748.30
6. Step 6: Final answer
   x = 109,667.58