Finding the Fourth Proportional to 91,569.63, 137,978.41 and 75,294.25

Step by Step Solution

1. Step 1: Write the proportion equation
   91,569.63 : 137,978.41 = 75,294.25 : x
2. Step 2: Convert to fraction form
   91,569.63/137,978.41 = 75,294.25/x
3. Step 3: Cross multiply
   91,569.63x = 137,978.41 × 75,294.25
4. Step 4: Simplify right side
   91,569.63x = 10,388,980,897.14
5. Step 5: Solve for x
   x = 10,388,980,897.14/91,569.63
6. Step 6: Final answer
   x = 113,454.44