Finding the Fourth Proportional to 1,123,845,113.43, 1,685,758,339.55 and 878,408,056.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,845,113.43 : 1,685,758,339.55 = 878,408,056.10 : x
2. Step 2: Convert to fraction form
   1,123,845,113.43/1,685,758,339.55 = 878,408,056.10/x
3. Step 3: Cross multiply
   1,123,845,113.43x = 1,685,758,339.55 × 878,408,056.10
4. Step 4: Simplify right side
   1,123,845,113.43x = 1,480,783,706,104,889,600
5. Step 5: Solve for x
   x = 1,480,783,706,104,889,600/1,123,845,113.43
6. Step 6: Final answer
   x = 1,317,604,791.27