Finding the Fourth Proportional to 1,123,298,047.15, 1,685,176,877.53 and 386,272,233.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,298,047.15 : 1,685,176,877.53 = 386,272,233.28 : x
2. Step 2: Convert to fraction form
   1,123,298,047.15/1,685,176,877.53 = 386,272,233.28/x
3. Step 3: Cross multiply
   1,123,298,047.15x = 1,685,176,877.53 × 386,272,233.28
4. Step 4: Simplify right side
   1,123,298,047.15x = 650,937,035,954,301,824
5. Step 5: Solve for x
   x = 650,937,035,954,301,824/1,123,298,047.15
6. Step 6: Final answer
   x = 579,487,374.35