Finding the Fourth Proportional to 42,915.93, 64,359.32 and 21,847.83

Step by Step Solution

1. Step 1: Write the proportion equation
   42,915.93 : 64,359.32 = 21,847.83 : x
2. Step 2: Convert to fraction form
   42,915.93/64,359.32 = 21,847.83/x
3. Step 3: Cross multiply
   42,915.93x = 64,359.32 × 21,847.83
4. Step 4: Simplify right side
   42,915.93x = 1,406,111,373.04
5. Step 5: Solve for x
   x = 1,406,111,373.04/42,915.93
6. Step 6: Final answer
   x = 32,764.32