Finding the Fourth Proportional to 103,627.10, 155,671.05 and 99,710.30

Step by Step Solution

1. Step 1: Write the proportion equation
   103,627.10 : 155,671.05 = 99,710.30 : x
2. Step 2: Convert to fraction form
   103,627.10/155,671.05 = 99,710.30/x
3. Step 3: Cross multiply
   103,627.10x = 155,671.05 × 99,710.30
4. Step 4: Simplify right side
   103,627.10x = 15,522,007,096.82
5. Step 5: Solve for x
   x = 15,522,007,096.82/103,627.10
6. Step 6: Final answer
   x = 149,787.14