Finding the Fourth Proportional to 298,973,870.10, 448,460,805.15 and 137,730,734.10

Step by Step Solution

1. Step 1: Write the proportion equation
   298,973,870.10 : 448,460,805.15 = 137,730,734.10 : x
2. Step 2: Convert to fraction form
   298,973,870.10/448,460,805.15 = 137,730,734.10/x
3. Step 3: Cross multiply
   298,973,870.10x = 448,460,805.15 × 137,730,734.10
4. Step 4: Simplify right side
   298,973,870.10x = 61,766,835,908,386,552
5. Step 5: Solve for x
   x = 61,766,835,908,386,552/298,973,870.10
6. Step 6: Final answer
   x = 206,596,101.15