Finding the Fourth Proportional to 77,427,990, 116,141,964.12 and 28,909,627.32

Step by Step Solution

1. Step 1: Write the proportion equation
   77,427,990 : 116,141,964.12 = 28,909,627.32 : x
2. Step 2: Convert to fraction form
   77,427,990/116,141,964.12 = 28,909,627.32/x
3. Step 3: Cross multiply
   77,427,990x = 116,141,964.12 × 28,909,627.32
4. Step 4: Simplify right side
   77,427,990x = 3,357,620,898,922,012
5. Step 5: Solve for x
   x = 3,357,620,898,922,012/77,427,990
6. Step 6: Final answer
   x = 43,364,433.18