Finding the Fourth Proportional to 142,808,874.64, 197,080,404.06 and 80,927,155.60

Step by Step Solution

1. Step 1: Write the proportion equation
   142,808,874.64 : 197,080,404.06 = 80,927,155.60 : x
2. Step 2: Convert to fraction form
   142,808,874.64/197,080,404.06 = 80,927,155.60/x
3. Step 3: Cross multiply
   142,808,874.64x = 197,080,404.06 × 80,927,155.60
4. Step 4: Simplify right side
   142,808,874.64x = 15,949,156,525,074,490
5. Step 5: Solve for x
   x = 15,949,156,525,074,490/142,808,874.64
6. Step 6: Final answer
   x = 111,681,830.46