Finding the Fourth Proportional to 148,139,728.72, 204,503,714.76 and 98,662,440.40

Step by Step Solution

1. Step 1: Write the proportion equation
   148,139,728.72 : 204,503,714.76 = 98,662,440.40 : x
2. Step 2: Convert to fraction form
   148,139,728.72/204,503,714.76 = 98,662,440.40/x
3. Step 3: Cross multiply
   148,139,728.72x = 204,503,714.76 × 98,662,440.40
4. Step 4: Simplify right side
   148,139,728.72x = 20,176,835,569,087,100
5. Step 5: Solve for x
   x = 20,176,835,569,087,100/148,139,728.72
6. Step 6: Final answer
   x = 136,201,380.57