Finding the Fourth Proportional to 100,566.22, 138,792.27 and 64,300.54

Step by Step Solution

1. Step 1: Write the proportion equation
   100,566.22 : 138,792.27 = 64,300.54 : x
2. Step 2: Convert to fraction form
   100,566.22/138,792.27 = 64,300.54/x
3. Step 3: Cross multiply
   100,566.22x = 138,792.27 × 64,300.54
4. Step 4: Simplify right side
   100,566.22x = 8,924,417,908.83
5. Step 5: Solve for x
   x = 8,924,417,908.83/100,566.22
6. Step 6: Final answer
   x = 88,741.71