Finding the Fourth Proportional to 91,804.10, 137,706.15 and 91,804.10

Step by Step Solution

1. Step 1: Write the proportion equation
   91,804.10 : 137,706.15 = 91,804.10 : x
2. Step 2: Convert to fraction form
   91,804.10/137,706.15 = 91,804.10/x
3. Step 3: Cross multiply
   91,804.10x = 137,706.15 × 91,804.10
4. Step 4: Simplify right side
   91,804.10x = 12,641,989,165.22
5. Step 5: Solve for x
   x = 12,641,989,165.22/91,804.10
6. Step 6: Final answer
   x = 137,706.15