Finding the Fourth Proportional to 103,787.69, 155,681.51 and 74,263.19

Step by Step Solution

1. Step 1: Write the proportion equation
   103,787.69 : 155,681.51 = 74,263.19 : x
2. Step 2: Convert to fraction form
   103,787.69/155,681.51 = 74,263.19/x
3. Step 3: Cross multiply
   103,787.69x = 155,681.51 × 74,263.19
4. Step 4: Simplify right side
   103,787.69x = 11,561,404,406.89
5. Step 5: Solve for x
   x = 11,561,404,406.89/103,787.69
6. Step 6: Final answer
   x = 111,394.76