Finding the Fourth Proportional to 1,013,845,357.15, 1,520,522,238.69 and 276,918,714.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,013,845,357.15 : 1,520,522,238.69 = 276,918,714.16 : x
2. Step 2: Convert to fraction form
   1,013,845,357.15/1,520,522,238.69 = 276,918,714.16/x
3. Step 3: Cross multiply
   1,013,845,357.15x = 1,520,522,238.69 × 276,918,714.16
4. Step 4: Simplify right side
   1,013,845,357.15x = 421,061,063,185,918,144
5. Step 5: Solve for x
   x = 421,061,063,185,918,144/1,013,845,357.15
6. Step 6: Final answer
   x = 415,310,934.96