Finding the Fourth Proportional to 456,737,917.47, 630,190,294.17 and 258,499,408.07

Step by Step Solution

1. Step 1: Write the proportion equation
   456,737,917.47 : 630,190,294.17 = 258,499,408.07 : x
2. Step 2: Convert to fraction form
   456,737,917.47/630,190,294.17 = 258,499,408.07/x
3. Step 3: Cross multiply
   456,737,917.47x = 630,190,294.17 × 258,499,408.07
4. Step 4: Simplify right side
   456,737,917.47x = 162,903,818,014,404,160
5. Step 5: Solve for x
   x = 162,903,818,014,404,160/456,737,917.47
6. Step 6: Final answer
   x = 356,668,040.43