Finding the Fourth Proportional to 100,196, 138,280.56 and 55,484

Step by Step Solution

1. Step 1: Write the proportion equation
   100,196 : 138,280.56 = 55,484 : x
2. Step 2: Convert to fraction form
   100,196/138,280.56 = 55,484/x
3. Step 3: Cross multiply
   100,196x = 138,280.56 × 55,484
4. Step 4: Simplify right side
   100,196x = 7,672,358,591.04
5. Step 5: Solve for x
   x = 7,672,358,591.04/100,196
6. Step 6: Final answer
   x = 76,573.50