Finding the Fourth Proportional to 77,783,464.32, 107,343,345.12 and 42,978,396.96

Step by Step Solution

1. Step 1: Write the proportion equation
   77,783,464.32 : 107,343,345.12 = 42,978,396.96 : x
2. Step 2: Convert to fraction form
   77,783,464.32/107,343,345.12 = 42,978,396.96/x
3. Step 3: Cross multiply
   77,783,464.32x = 107,343,345.12 × 42,978,396.96
4. Step 4: Simplify right side
   77,783,464.32x = 4,613,444,897,581,639
5. Step 5: Solve for x
   x = 4,613,444,897,581,639/77,783,464.32
6. Step 6: Final answer
   x = 59,311,383.70