Finding the Fourth Proportional to 112,298.40, 154,985.04 and 64,553.76

Step by Step Solution

1. Step 1: Write the proportion equation
   112,298.40 : 154,985.04 = 64,553.76 : x
2. Step 2: Convert to fraction form
   112,298.40/154,985.04 = 64,553.76/x
3. Step 3: Cross multiply
   112,298.40x = 154,985.04 × 64,553.76
4. Step 4: Simplify right side
   112,298.40x = 10,004,867,075.75
5. Step 5: Solve for x
   x = 10,004,867,075.75/112,298.40
6. Step 6: Final answer
   x = 89,091.80