Finding the Fourth Proportional to 91,603.54, 137,398.74 and 28,422.04

Step by Step Solution

1. Step 1: Write the proportion equation
   91,603.54 : 137,398.74 = 28,422.04 : x
2. Step 2: Convert to fraction form
   91,603.54/137,398.74 = 28,422.04/x
3. Step 3: Cross multiply
   91,603.54x = 137,398.74 × 28,422.04
4. Step 4: Simplify right side
   91,603.54x = 3,905,152,484.23
5. Step 5: Solve for x
   x = 3,905,152,484.23/91,603.54
6. Step 6: Final answer
   x = 42,631.02