Finding the Fourth Proportional to 150,848, 208,176.72 and 83,780

Step by Step Solution

1. Step 1: Write the proportion equation
   150,848 : 208,176.72 = 83,780 : x
2. Step 2: Convert to fraction form
   150,848/208,176.72 = 83,780/x
3. Step 3: Cross multiply
   150,848x = 208,176.72 × 83,780
4. Step 4: Simplify right side
   150,848x = 17,441,045,601.60
5. Step 5: Solve for x
   x = 17,441,045,601.60/150,848
6. Step 6: Final answer
   x = 115,620.00