Finding the Fourth Proportional to 61,152, 91,741.76 and 21,709.12

Step by Step Solution

1. Step 1: Write the proportion equation
   61,152 : 91,741.76 = 21,709.12 : x
2. Step 2: Convert to fraction form
   61,152/91,741.76 = 21,709.12/x
3. Step 3: Cross multiply
   61,152x = 91,741.76 × 21,709.12
4. Step 4: Simplify right side
   61,152x = 1,991,632,876.85
5. Step 5: Solve for x
   x = 1,991,632,876.85/61,152
6. Step 6: Final answer
   x = 32,568.56