Finding the Fourth Proportional to 67,905.95, 101,858.72 and 21,158.82

Step by Step Solution

1. Step 1: Write the proportion equation
   67,905.95 : 101,858.72 = 21,158.82 : x
2. Step 2: Convert to fraction form
   67,905.95/101,858.72 = 21,158.82/x
3. Step 3: Cross multiply
   67,905.95x = 101,858.72 × 21,158.82
4. Step 4: Simplify right side
   67,905.95x = 2,155,210,216.12
5. Step 5: Solve for x
   x = 2,155,210,216.12/67,905.95
6. Step 6: Final answer
   x = 31,738.17