Finding the Fourth Proportional to 112,238.03, 154,914.98 and 64,519.05

Step by Step Solution

1. Step 1: Write the proportion equation
   112,238.03 : 154,914.98 = 64,519.05 : x
2. Step 2: Convert to fraction form
   112,238.03/154,914.98 = 64,519.05/x
3. Step 3: Cross multiply
   112,238.03x = 154,914.98 × 64,519.05
4. Step 4: Simplify right side
   112,238.03x = 9,994,967,017.77
5. Step 5: Solve for x
   x = 9,994,967,017.77/112,238.03
6. Step 6: Final answer
   x = 89,051.52