Finding the Fourth Proportional to 590,838,212.52, 885,465,055.98 and 459,838,662.12

Step by Step Solution

1. Step 1: Write the proportion equation
   590,838,212.52 : 885,465,055.98 = 459,838,662.12 : x
2. Step 2: Convert to fraction form
   590,838,212.52/885,465,055.98 = 459,838,662.12/x
3. Step 3: Cross multiply
   590,838,212.52x = 885,465,055.98 × 459,838,662.12
4. Step 4: Simplify right side
   590,838,212.52x = 407,171,066,695,854,144
5. Step 5: Solve for x
   x = 407,171,066,695,854,144/590,838,212.52
6. Step 6: Final answer
   x = 689,141,389.42