Finding the Fourth Proportional to 111,269, 153,551.22 and 66,557

Step by Step Solution

1. Step 1: Write the proportion equation
   111,269 : 153,551.22 = 66,557 : x
2. Step 2: Convert to fraction form
   111,269/153,551.22 = 66,557/x
3. Step 3: Cross multiply
   111,269x = 153,551.22 × 66,557
4. Step 4: Simplify right side
   111,269x = 10,219,908,549.54
5. Step 5: Solve for x
   x = 10,219,908,549.54/111,269
6. Step 6: Final answer
   x = 91,848.66