Finding the Fourth Proportional to 703,051,870.32, 970,209,828.72 and 389,778,019.92

Step by Step Solution

1. Step 1: Write the proportion equation
   703,051,870.32 : 970,209,828.72 = 389,778,019.92 : x
2. Step 2: Convert to fraction form
   703,051,870.32/970,209,828.72 = 389,778,019.92/x
3. Step 3: Cross multiply
   703,051,870.32x = 970,209,828.72 × 389,778,019.92
4. Step 4: Simplify right side
   703,051,870.32x = 378,166,465,945,403,968
5. Step 5: Solve for x
   x = 378,166,465,945,403,968/703,051,870.32
6. Step 6: Final answer
   x = 537,892,695.99