Finding the Fourth Proportional to 100,521,144.68, 138,725,105.13 and 75,697,535.57

Step by Step Solution

1. Step 1: Write the proportion equation
   100,521,144.68 : 138,725,105.13 = 75,697,535.57 : x
2. Step 2: Convert to fraction form
   100,521,144.68/138,725,105.13 = 75,697,535.57/x
3. Step 3: Cross multiply
   100,521,144.68x = 138,725,105.13 × 75,697,535.57
4. Step 4: Simplify right side
   100,521,144.68x = 10,501,148,580,030,164
5. Step 5: Solve for x
   x = 10,501,148,580,030,164/100,521,144.68
6. Step 6: Final answer
   x = 104,467,061.27