Finding the Fourth Proportional to 78,157,071.64, 107,786,192.70 and 48,791,111.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,157,071.64 : 107,786,192.70 = 48,791,111.32 : x
2. Step 2: Convert to fraction form
   78,157,071.64/107,786,192.70 = 48,791,111.32/x
3. Step 3: Cross multiply
   78,157,071.64x = 107,786,192.70 × 48,791,111.32
4. Step 4: Simplify right side
   78,157,071.64x = 5,259,008,126,784,672
5. Step 5: Solve for x
   x = 5,259,008,126,784,672/78,157,071.64
6. Step 6: Final answer
   x = 67,287,681.29