Finding the Fourth Proportional to 77,437,837.89, 106,860,942.63 and 42,154,909.47

Step by Step Solution

1. Step 1: Write the proportion equation
   77,437,837.89 : 106,860,942.63 = 42,154,909.47 : x
2. Step 2: Convert to fraction form
   77,437,837.89/106,860,942.63 = 42,154,909.47/x
3. Step 3: Cross multiply
   77,437,837.89x = 106,860,942.63 × 42,154,909.47
4. Step 4: Simplify right side
   77,437,837.89x = 4,504,713,362,446,513
5. Step 5: Solve for x
   x = 4,504,713,362,446,513/77,437,837.89
6. Step 6: Final answer
   x = 58,171,992.98