Finding the Fourth Proportional to 91,611.27, 137,436.53 and 28,430.01

Step by Step Solution

1. Step 1: Write the proportion equation
   91,611.27 : 137,436.53 = 28,430.01 : x
2. Step 2: Convert to fraction form
   91,611.27/137,436.53 = 28,430.01/x
3. Step 3: Cross multiply
   91,611.27x = 137,436.53 × 28,430.01
4. Step 4: Simplify right side
   91,611.27x = 3,907,321,780.12
5. Step 5: Solve for x
   x = 3,907,321,780.12/91,611.27
6. Step 6: Final answer
   x = 42,651.10