Finding the Fourth Proportional to 93,312,100.80, 139,968,151.20 and 42,293,764.80

Step by Step Solution

1. Step 1: Write the proportion equation
   93,312,100.80 : 139,968,151.20 = 42,293,764.80 : x
2. Step 2: Convert to fraction form
   93,312,100.80/139,968,151.20 = 42,293,764.80/x
3. Step 3: Cross multiply
   93,312,100.80x = 139,968,151.20 × 42,293,764.80
4. Step 4: Simplify right side
   93,312,100.80x = 5,919,780,066,343,637
5. Step 5: Solve for x
   x = 5,919,780,066,343,637/93,312,100.80
6. Step 6: Final answer
   x = 63,440,647.20