Finding the Fourth Proportional to 91,510.61, 137,065.96 and 38,040.48

Step by Step Solution

1. Step 1: Write the proportion equation
   91,510.61 : 137,065.96 = 38,040.48 : x
2. Step 2: Convert to fraction form
   91,510.61/137,065.96 = 38,040.48/x
3. Step 3: Cross multiply
   91,510.61x = 137,065.96 × 38,040.48
4. Step 4: Simplify right side
   91,510.61x = 5,214,054,910.06
5. Step 5: Solve for x
   x = 5,214,054,910.06/91,510.61
6. Step 6: Final answer
   x = 56,977.60