Finding the Fourth Proportional to 319,240,111.17, 440,551,158.55 and 172,562,395.17

Step by Step Solution

1. Step 1: Write the proportion equation
   319,240,111.17 : 440,551,158.55 = 172,562,395.17 : x
2. Step 2: Convert to fraction form
   319,240,111.17/440,551,158.55 = 172,562,395.17/x
3. Step 3: Cross multiply
   319,240,111.17x = 440,551,158.55 × 172,562,395.17
4. Step 4: Simplify right side
   319,240,111.17x = 76,022,563,113,536,096
5. Step 5: Solve for x
   x = 76,022,563,113,536,096/319,240,111.17
6. Step 6: Final answer
   x = 238,136,000.00