Finding the Fourth Proportional to 91,070.33, 137,306.24 and 89,437.37

Step by Step Solution

1. Step 1: Write the proportion equation
   91,070.33 : 137,306.24 = 89,437.37 : x
2. Step 2: Convert to fraction form
   91,070.33/137,306.24 = 89,437.37/x
3. Step 3: Cross multiply
   91,070.33x = 137,306.24 × 89,437.37
4. Step 4: Simplify right side
   91,070.33x = 12,280,308,191.86
5. Step 5: Solve for x
   x = 12,280,308,191.86/91,070.33
6. Step 6: Final answer
   x = 134,844.23