Finding the Fourth Proportional to 2,791,087,194.60, 3,851,726,156.78 and 1,538,068,889.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,791,087,194.60 : 3,851,726,156.78 = 1,538,068,889.61 : x
2. Step 2: Convert to fraction form
   2,791,087,194.60/3,851,726,156.78 = 1,538,068,889.61/x
3. Step 3: Cross multiply
   2,791,087,194.60x = 3,851,726,156.78 × 1,538,068,889.61
4. Step 4: Simplify right side
   2,791,087,194.60x = 5,924,220,173,032,716,288
5. Step 5: Solve for x
   x = 5,924,220,173,032,716,288/2,791,087,194.60
6. Step 6: Final answer
   x = 2,122,549,300.68