Finding the Fourth Proportional to 91,222.83, 136,742.72 and 37,842.21

Step by Step Solution

1. Step 1: Write the proportion equation
   91,222.83 : 136,742.72 = 37,842.21 : x
2. Step 2: Convert to fraction form
   91,222.83/136,742.72 = 37,842.21/x
3. Step 3: Cross multiply
   91,222.83x = 136,742.72 × 37,842.21
4. Step 4: Simplify right side
   91,222.83x = 5,174,646,537.00
5. Step 5: Solve for x
   x = 5,174,646,537.00/91,222.83
6. Step 6: Final answer
   x = 56,725.35