Finding the Fourth Proportional to 61,191.34, 91,764.59 and 21,200.00

Step by Step Solution

1. Step 1: Write the proportion equation
   61,191.34 : 91,764.59 = 21,200.00 : x
2. Step 2: Convert to fraction form
   61,191.34/91,764.59 = 21,200.00/x
3. Step 3: Cross multiply
   61,191.34x = 91,764.59 × 21,200.00
4. Step 4: Simplify right side
   61,191.34x = 1,945,409,259.35
5. Step 5: Solve for x
   x = 1,945,409,259.35/61,191.34
6. Step 6: Final answer
   x = 31,792.23