Finding the Fourth Proportional to 56,764.18, 85,116.70 and 21,196.25

Step by Step Solution

1. Step 1: Write the proportion equation
   56,764.18 : 85,116.70 = 21,196.25 : x
2. Step 2: Convert to fraction form
   56,764.18/85,116.70 = 21,196.25/x
3. Step 3: Cross multiply
   56,764.18x = 85,116.70 × 21,196.25
4. Step 4: Simplify right side
   56,764.18x = 1,804,154,852.38
5. Step 5: Solve for x
   x = 1,804,154,852.38/56,764.18
6. Step 6: Final answer
   x = 31,783.33