Finding the Fourth Proportional to 91,046,568.15, 136,569,852.23 and 91,046,568.15

Step by Step Solution

1. Step 1: Write the proportion equation
   91,046,568.15 : 136,569,852.23 = 91,046,568.15 : x
2. Step 2: Convert to fraction form
   91,046,568.15/136,569,852.23 = 91,046,568.15/x
3. Step 3: Cross multiply
   91,046,568.15x = 136,569,852.23 × 91,046,568.15
4. Step 4: Simplify right side
   91,046,568.15x = 12,434,216,357,838,892
5. Step 5: Solve for x
   x = 12,434,216,357,838,892/91,046,568.15
6. Step 6: Final answer
   x = 136,569,852.23