Finding the Fourth Proportional to 91,549.19, 137,343.38 and 28,367.91

Step by Step Solution

1. Step 1: Write the proportion equation
   91,549.19 : 137,343.38 = 28,367.91 : x
2. Step 2: Convert to fraction form
   91,549.19/137,343.38 = 28,367.91/x
3. Step 3: Cross multiply
   91,549.19x = 137,343.38 × 28,367.91
4. Step 4: Simplify right side
   91,549.19x = 3,896,144,501.10
5. Step 5: Solve for x
   x = 3,896,144,501.10/91,549.19
6. Step 6: Final answer
   x = 42,557.93