Finding the Fourth Proportional to 1,359,018,111.29, 2,038,529,531.60 and 426,412,529.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359,018,111.29 : 2,038,529,531.60 = 426,412,529.81 : x
2. Step 2: Convert to fraction form
   1,359,018,111.29/2,038,529,531.60 = 426,412,529.81/x
3. Step 3: Cross multiply
   1,359,018,111.29x = 2,038,529,531.60 × 426,412,529.81
4. Step 4: Simplify right side
   1,359,018,111.29x = 869,254,534,661,950,336
5. Step 5: Solve for x
   x = 869,254,534,661,950,336/1,359,018,111.29
6. Step 6: Final answer
   x = 639,619,536.66