Finding the Fourth Proportional to 91,780.02, 137,671.54 and 25,219.73

Step by Step Solution

1. Step 1: Write the proportion equation
   91,780.02 : 137,671.54 = 25,219.73 : x
2. Step 2: Convert to fraction form
   91,780.02/137,671.54 = 25,219.73/x
3. Step 3: Cross multiply
   91,780.02x = 137,671.54 × 25,219.73
4. Step 4: Simplify right side
   91,780.02x = 3,472,039,348.61
5. Step 5: Solve for x
   x = 3,472,039,348.61/91,780.02
6. Step 6: Final answer
   x = 37,830.01