Finding the Fourth Proportional to 111,861.90, 154,369.93 and 64,118.04

Step by Step Solution

1. Step 1: Write the proportion equation
   111,861.90 : 154,369.93 = 64,118.04 : x
2. Step 2: Convert to fraction form
   111,861.90/154,369.93 = 64,118.04/x
3. Step 3: Cross multiply
   111,861.90x = 154,369.93 × 64,118.04
4. Step 4: Simplify right side
   111,861.90x = 9,897,897,346.54
5. Step 5: Solve for x
   x = 9,897,897,346.54/111,861.90
6. Step 6: Final answer
   x = 88,483.19