Finding the Fourth Proportional to 100,897,628.15, 139,238,725.46 and 54,487,880.70

Step by Step Solution

1. Step 1: Write the proportion equation
   100,897,628.15 : 139,238,725.46 = 54,487,880.70 : x
2. Step 2: Convert to fraction form
   100,897,628.15/139,238,725.46 = 54,487,880.70/x
3. Step 3: Cross multiply
   100,897,628.15x = 139,238,725.46 × 54,487,880.70
4. Step 4: Simplify right side
   100,897,628.15x = 7,586,823,061,412,094
5. Step 5: Solve for x
   x = 7,586,823,061,412,094/100,897,628.15
6. Step 6: Final answer
   x = 75,193,274.62