Finding the Fourth Proportional to 91,569.21, 137,400.69 and 43,592.11

Step by Step Solution

1. Step 1: Write the proportion equation
   91,569.21 : 137,400.69 = 43,592.11 : x
2. Step 2: Convert to fraction form
   91,569.21/137,400.69 = 43,592.11/x
3. Step 3: Cross multiply
   91,569.21x = 137,400.69 × 43,592.11
4. Step 4: Simplify right side
   91,569.21x = 5,989,585,087.59
5. Step 5: Solve for x
   x = 5,989,585,087.59/91,569.21
6. Step 6: Final answer
   x = 65,410.47