Finding the Fourth Proportional to 78,127.50, 117,191.28 and 21,973.58

Step by Step Solution

1. Step 1: Write the proportion equation
   78,127.50 : 117,191.28 = 21,973.58 : x
2. Step 2: Convert to fraction form
   78,127.50/117,191.28 = 21,973.58/x
3. Step 3: Cross multiply
   78,127.50x = 117,191.28 × 21,973.58
4. Step 4: Simplify right side
   78,127.50x = 2,575,111,380.43
5. Step 5: Solve for x
   x = 2,575,111,380.43/78,127.50
6. Step 6: Final answer
   x = 32,960.37