Finding the Fourth Proportional to 100,521,141.56, 138,725,100.81 and 75,697,532.45

Step by Step Solution

1. Step 1: Write the proportion equation
   100,521,141.56 : 138,725,100.81 = 75,697,532.45 : x
2. Step 2: Convert to fraction form
   100,521,141.56/138,725,100.81 = 75,697,532.45/x
3. Step 3: Cross multiply
   100,521,141.56x = 138,725,100.81 × 75,697,532.45
4. Step 4: Simplify right side
   100,521,141.56x = 10,501,147,820,541,310
5. Step 5: Solve for x
   x = 10,501,147,820,541,310/100,521,141.56
6. Step 6: Final answer
   x = 104,467,056.95