Finding the Fourth Proportional to 128,347,493.76, 192,539,538.72 and 42,092,651.52

Step by Step Solution

1. Step 1: Write the proportion equation
   128,347,493.76 : 192,539,538.72 = 42,092,651.52 : x
2. Step 2: Convert to fraction form
   128,347,493.76/192,539,538.72 = 42,092,651.52/x
3. Step 3: Cross multiply
   128,347,493.76x = 192,539,538.72 × 42,092,651.52
4. Step 4: Simplify right side
   128,347,493.76x = 8,104,499,707,162,507
5. Step 5: Solve for x
   x = 8,104,499,707,162,507/128,347,493.76
6. Step 6: Final answer
   x = 63,144,978.29