Finding the Fourth Proportional to 76,319,061.72, 105,310,740.24 and 51,593,051.40

Step by Step Solution

1. Step 1: Write the proportion equation
   76,319,061.72 : 105,310,740.24 = 51,593,051.40 : x
2. Step 2: Convert to fraction form
   76,319,061.72/105,310,740.24 = 51,593,051.40/x
3. Step 3: Cross multiply
   76,319,061.72x = 105,310,740.24 × 51,593,051.40
4. Step 4: Simplify right side
   76,319,061.72x = 5,433,302,434,174,368
5. Step 5: Solve for x
   x = 5,433,302,434,174,368/76,319,061.72
6. Step 6: Final answer
   x = 71,191,944.87