Finding the Fourth Proportional to 105,094.53, 145,030.46 and 74,932.40

Step by Step Solution

1. Step 1: Write the proportion equation
   105,094.53 : 145,030.46 = 74,932.40 : x
2. Step 2: Convert to fraction form
   105,094.53/145,030.46 = 74,932.40/x
3. Step 3: Cross multiply
   105,094.53x = 145,030.46 × 74,932.40
4. Step 4: Simplify right side
   105,094.53x = 10,867,480,543.96
5. Step 5: Solve for x
   x = 10,867,480,543.96/105,094.53
6. Step 6: Final answer
   x = 103,406.72