Finding the Fourth Proportional to 91,621.12, 137,435.84 and 25,059.78

Step by Step Solution

1. Step 1: Write the proportion equation
   91,621.12 : 137,435.84 = 25,059.78 : x
2. Step 2: Convert to fraction form
   91,621.12/137,435.84 = 25,059.78/x
3. Step 3: Cross multiply
   91,621.12x = 137,435.84 × 25,059.78
4. Step 4: Simplify right side
   91,621.12x = 3,444,111,914.52
5. Step 5: Solve for x
   x = 3,444,111,914.52/91,621.12
6. Step 6: Final answer
   x = 37,590.81