Finding the Fourth Proportional to 112,209, 154,851.30 and 61,222.56

Step by Step Solution

1. Step 1: Write the proportion equation
   112,209 : 154,851.30 = 61,222.56 : x
2. Step 2: Convert to fraction form
   112,209/154,851.30 = 61,222.56/x
3. Step 3: Cross multiply
   112,209x = 154,851.30 × 61,222.56
4. Step 4: Simplify right side
   112,209x = 9,480,393,005.33
5. Step 5: Solve for x
   x = 9,480,393,005.33/112,209
6. Step 6: Final answer
   x = 84,488.70