Finding the Fourth Proportional to 156,231, 234,386.46 and 45,423

Step by Step Solution

1. Step 1: Write the proportion equation
   156,231 : 234,386.46 = 45,423 : x
2. Step 2: Convert to fraction form
   156,231/234,386.46 = 45,423/x
3. Step 3: Cross multiply
   156,231x = 234,386.46 × 45,423
4. Step 4: Simplify right side
   156,231x = 10,646,536,172.58
5. Step 5: Solve for x
   x = 10,646,536,172.58/156,231
6. Step 6: Final answer
   x = 68,146.12