Finding the Fourth Proportional to 868,900,097.30, 1,199,123,128.06 and 492,563,979.04

Step by Step Solution

1. Step 1: Write the proportion equation
   868,900,097.30 : 1,199,123,128.06 = 492,563,979.04 : x
2. Step 2: Convert to fraction form
   868,900,097.30/1,199,123,128.06 = 492,563,979.04/x
3. Step 3: Cross multiply
   868,900,097.30x = 1,199,123,128.06 × 492,563,979.04
4. Step 4: Simplify right side
   868,900,097.30x = 590,644,859,316,125,056
5. Step 5: Solve for x
   x = 590,644,859,316,125,056/868,900,097.30
6. Step 6: Final answer
   x = 679,761,529.72